Quality Steel Bailey Bridge & Modular Steel Bridge Factory

In February 2026, Spain was hit by large-scale flood disasters, which caused severe damage to local infrastructure, including some bridge structures. This natural disaster once again highlighted the importance of designing and constructing durable, resilient and standard-compliant permanent bridges for regional infrastructure stability. In the field of civil engineering, constructing permanent bridges plays a vital role in infrastructure advancement. Before delving into the Eurocodes standard applicable to permanent bridges in Spain, it is necessary to clarify the definition, advantages of permanent bridges, as well as the overall framework of European bridge design codes and the specific requirements of Spain’s local bridge design codes—all of which lay the foundation for ensuring bridge safety and adaptability, especially in the context of frequent extreme weather events such as floods. What is a Permanent Bridge and Its Advantages? A permanent bridge refers to a long-term, fixed bridge structure designed and constructed to serve transportation needs (highway, railway, pedestrian, etc.) for an extended service life—usually 50 years or more—with stable performance, strong durability and low long-term maintenance costs. Unlike temporary bridges that are built for short-term use (such as emergency rescue after natural disasters), permanent bridges are designed to withstand long-term environmental erosion, continuous traffic loads and unexpected extreme conditions (including floods, earthquakes, strong winds, etc.), and are core components of a region’s transportation network. The advantages of permanent bridges are particularly prominent, especially in disaster-prone areas like Spain which suffered from large-scale floods in February 2026: First, excellent durability, using high-quality materials and scientific design to resist corrosion, fatigue and environmental damage, ensuring long-term stable operation even after being affected by floods. Second, strong load-bearing capacity, which can stably bear continuous traffic loads (such as heavy trucks, high-speed trains) and sudden additional loads (such as flood impact, debris accumulation during floods). Third, good adaptability, which can be designed according to local geographical environment, climate characteristics and disaster risks (such as flood control standards) to enhance structural resilience. Fourth, economic efficiency in the long run, although the initial construction investment is relatively high, the low maintenance cost and long service life reduce the total life-cycle cost, and avoid frequent reconstruction and maintenance caused by structural damage after disasters. Fifth, stable social value, as a key link in the transportation network, permanent bridges ensure the smooth flow of people and materials, which is crucial for post-disaster rescue, economic recovery and daily social operation—this was fully reflected in the 2026 Spanish flood disaster, where standard-compliant permanent bridges became important channels for rescue materials transportation and personnel transfer. European Bridge Design Codes and Spain’s Local Bridge Design Codes European bridge design codes, commonly known as Eurocodes, are a set of harmonized technical standards developed by the European Committee for Standardization (CEN) to unify the structural design framework across European countries. The core purpose of Eurocodes is to ensure the safety, reliability, durability and interoperability of construction projects (including bridges) within the European market, eliminate technical trade barriers, and promote cross-border cooperation in the construction industry. Eurocodes cover all aspects of bridge design and construction, including load calculation, structural analysis, material specifications, durability requirements, and disaster resistance design (such as seismic, flood and wind resistance), forming a comprehensive and systematic technical guideline system. For Spain, the bridge design standard system is based on Eurocodes, supplemented by local national annexes and special specifications to adapt to the country’s unique geographical, climatic and engineering needs—especially in response to flood risks, which have been further emphasized after the February 2026 flood disaster. Specifically, Spain’s bridge design codes consist of three core parts: First, Eurocodes adopted as national standards. Spain converts Eurocodes into national standards through the Spanish Association for Standardization (UNE), with the prefix “UNE-EN”, making them mandatory for bridge design and construction. The key Eurocodes related to permanent bridges are consistent with the European unified standards, including EN 1990 (Basis of Structural Design), EN 1991 (Actions on Structures), EN 1992 (Design of Concrete Structures), EN 1993 (Design of Steel Structures), and EN 1994 (Design of Composite Steel and Concrete Structures), which form the core technical basis for Spanish bridge design. Second, National Annexes (NA). As a mandatory supplement to Eurocodes, the National Annexes adjust and specify key parameters in Eurocodes according to Spain’s actual conditions, such as load partial factors, flood control load standards, seismic zoning parameters, and material performance requirements. For example, AN/UNE-EN 1993-2 (National Annex for Steel Bridges) and AN/UNE-EN 1998-2 (National Annex for Seismic Design of Bridges) further refine the technical requirements combined with Spain’s engineering practice, especially increasing the relevant provisions for flood impact resistance after the 2026 flood disaster. Third, Spanish local special specifications. Issued by Spain’s Ministry of Transport and Sustainable Mobility (MITMA) and the Railway Infrastructure Administration (ADIF), these specifications focus on the special needs of Spain’s highway and railway bridges. Key specifications include NCSP-07 (Real Decreto 637/2007, Bridge Seismic Design Code), which supplements EN 1998-2 to enhance the seismic and flood resilience of bridges; RPX-95 (Recommended Code for the Design of Highway Steel-Concrete Composite Bridges); IAP-98 (General Design Code for Highway Bridges), which specifies geometric parameters, load standards and structural details; and ADIF’s special specifications for railway bridges, which match Eurocode 1991-2 and Eurocode 1993-2 to meet the design requirements of high-speed and ordinary railways. In Spain, compliance with the above Eurocodes standard and local specifications is crucial to guarantee safety, reliability, and performance in bridge design and construction—this is even more important after the February 2026 flood disaster, as the standards put forward higher requirements for the flood resistance, durability and structural resilience of permanent bridges. This article further explores the technical specifications, applications, and advantages of the Eurocodes standard concerning permanent bridges in Spain, and introduces how EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD., as an integrated industry and trade enterprise, produces steel structure bridges that meet local standards, offering valuable insights for B2B buyers and industry professionals. What are Eurocodes? Eurocodes represent a collection of harmonized technical standards developed by the European Committee for Standardization (CEN) to establish a cohesive framework for structural design across Europe. These guidelines cover various construction components, such as load calculations, structural analysis, and material specifications. For Spain, Eurocodes are essential not only for meeting national regulations but also for promoting international collaboration and trade in construction methodologies. Especially after the 2026 Spanish flood disaster, Eurocodes’ provisions on extreme load resistance (including flood impact) have become a key basis for optimizing bridge design and ensuring structural safety. Eurocodes adopt a limit state design method, focusing on two core limit states: Ultimate Limit State (ULS) and Serviceability Limit State (SLS). The Ultimate Limit State ensures that the bridge structure does not suffer collapse, damage or loss of stability under extreme loads (such as flood impact, heavy traffic, earthquakes); the Serviceability Limit State ensures that the bridge’s deflection, crack width and vibration meet the requirements during normal use, avoiding affecting traffic safety and user comfort. This design concept is fully integrated into the entire process of permanent bridge design in Spain, providing a solid technical guarantee for the long-term stable operation of bridges. Key Eurocodes Relevant to Permanent Bridges When designing permanent bridges in Spain, several Eurocodes are particularly significant, and their roles have been further highlighted in the context of post-2026 flood disaster infrastructure reconstruction: EN 1990: Basis of Structural Design - This standard lays out the principles and requirements for structural design, including load combination rules, safety factors and design criteria, ensuring bridges can endure various loads and environmental factors (such as flood impact, temperature changes, and corrosion). It is the core guiding standard for all permanent bridge design in Spain, providing a unified design framework. EN 1991: Actions on Structures - This code outlines the various loads that bridges may face, such as dead loads (bridge dead load, pavement, auxiliary facilities), live loads (highway vehicles, railway trains, pedestrians), wind forces, seismic actions, and special loads (flood impact force, debris impact force during floods). For Spain, which suffered from large-scale floods in 2026, the provisions on flood-related loads in this code have become a key reference for optimizing bridge design and improving flood resistance. EN 1992: Design of Concrete Structures - This standard delivers guidelines for designing and detailing concrete components utilized in bridge construction, concentrating on durability, serviceability, and ultimate limit states. It specifies the performance requirements of concrete materials, the design method of reinforced concrete and prestressed concrete structures, and the anti-crack and anti-corrosion measures—important for improving the durability of concrete bridges in flood-prone areas. EN 1993: Design of Steel Structures - For steel bridges, this code provides specifications on material properties, structural behavior, and fatigue evaluation. It clarifies the selection criteria of steel materials, the design method of steel components and connections, and the fatigue check requirements under long-term dynamic loads, which is the core standard for the design of steel structure permanent bridges in Spain. EN 1994: Design of Composite Steel and Concrete Structures - This standard is essential for bridges that incorporate both steel and concrete, offering guidelines for their integration and performance. Composite steel-concrete bridges combine the advantages of high strength of steel and good durability of concrete, and are widely used in highway and railway bridge projects in Spain, especially in post-2026 flood disaster reconstruction projects due to their strong adaptability and short construction period. Technical Features of Eurocodes for Bridge Construction The Eurocodes furnish comprehensive technical features that bolster the safety and reliability of permanent bridges, and these features are closely combined with Spain’s local needs and disaster prevention requirements, especially in response to flood risks: Load Combinations: Eurocodes specify particular load combinations to be considered during the design phase, including the combination of permanent loads, variable loads and special loads (such as flood impact loads), ensuring bridges can endure extreme circumstances, such as heavy traffic, adverse weather conditions and natural disasters like floods. After the 2026 Spanish flood disaster, the rationality of load combinations has become a key focus of bridge design review, ensuring that bridges can resist the impact of extreme floods. Material Performance: The standards stipulate performance criteria for various materials, ensuring that the steel and concrete used in bridge construction comply with stringent quality standards for strength and durability. For example, steel materials need to meet the requirements of tensile strength, yield strength and impact toughness, and have good corrosion resistance (to adapt to the humid environment after floods); concrete materials need to have appropriate strength grade, impermeability and frost resistance, avoiding damage caused by flood immersion and erosion. Structural Analysis: The Eurocodes promote advanced analytical techniques, including finite element modeling, which allows for more precise predictions of structural behavior under different load scenarios (such as flood impact, uneven settlement, and temperature stress). In Spain’s permanent bridge design, finite element analysis is widely used to simulate the stress and deformation of bridge structures under flood conditions, optimizing the structural design and improving flood resistance. Durability and Maintenance: Eurocodes address the long-term performance of materials and structures, underscoring the importance of maintenance strategies to prolong the lifespan of bridges. Combined with the experience of the 2026 flood disaster, Spanish bridge design further strengthens the durability design, such as adopting anti-corrosion coatings for steel structures, setting drainage systems to avoid long-term water accumulation, and formulating regular inspection and maintenance plans to timely repair structural damage caused by floods and other disasters. Applications of Eurocodes in Permanent Bridge Projects Permanent bridges in Spain are essential connectors for transportation networks, and implementing Eurocodes ensures they adhere to both national and international standards. Especially after the February 2026 flood disaster, the application of Eurocodes in bridge reconstruction and new construction projects has become more extensive, covering various types of permanent bridges: Highway and Rail Bridges: Eurocodes facilitate the design of sturdy highway and rail bridges capable of supporting heavy traffic loads and dynamic forces from trains. In post-flood reconstruction, these bridges are designed according to Eurocodes’ load combination requirements, increasing the flood impact resistance and ensuring the smooth flow of key transportation lines—an important guarantee for regional economic recovery. Pedestrian and Cycle Bridges: The standards offer guidelines for designing lighter, aesthetically pleasing pedestrian and cycle bridges, ensuring safety and comfort for users. Even for such light-duty bridges, Eurocodes’ requirements for structural stability and durability are strictly followed, especially in flood-prone areas, to avoid structural damage caused by floods and ensure the safety of pedestrians and cyclists. Bridges in Seismic Zones and Flood-Prone Areas: Given Spain’s varied geography, which includes both seismic-prone areas and flood-prone regions (as reflected in the 2026 flood disaster), Eurocodes provide critical criteria for designing bridges in these areas, enhancing their resilience and safety. For flood-prone areas, Eurocodes’ provisions on flood load calculation, structural waterproofing and corrosion resistance are fully applied, and combined with Spain’s local NCSP-07 specification, the bridge’s flood resistance level is further improved. EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD.: Producing Steel Structure Bridges Compliant with Spanish Standards Against the backdrop of Spain’s emphasis on bridge safety and standard compliance, especially after the 2026 flood disaster which increased the demand for high-quality, disaster-resistant permanent bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. (hereinafter referred to as “EVERCROSS”) stands out as an integrated industry and trade enterprise specializing in the R&D, design, production, and export of steel structure bridges. With rich experience in international bridge projects and a strict quality control system, EVERCROSS has the capability to produce steel structure bridges that fully comply with Eurocodes and Spain’s local bridge design standards, providing reliable infrastructure solutions for the Spanish market, especially for post-flood reconstruction projects. As an integrated industry and trade enterprise, EVERCROSS achieves compliance with Spanish standards through a full-process quality control system, covering design, material selection, production, testing and after-sales service: First, Professional Design Team with Rich Experience in Eurocodes. EVERCROSS has a team of senior structural designers who are proficient in Eurocodes (especially EN 1993 for steel structures) and Spain’s local specifications (including UNE-EN series standards, NCSP-07, RPX-95, etc.). Combining the geographical environment, climate characteristics and flood risk of the project location in Spain, the team carries out personalized design—for example, optimizing the bridge structure to enhance flood impact resistance, adopting reasonable load combinations according to the 2026 flood disaster experience, and ensuring that the design scheme fully meets the requirements of Spanish national standards and local specifications. At the same time, the design team uses advanced finite element analysis software to simulate the structural behavior under flood, seismic and other extreme conditions, ensuring the safety and reliability of the design. Second, Strict Material Selection Meeting European Standards. The quality of steel materials is the foundation of steel structure bridge safety and durability. EVERCROSS selects high-quality steel materials that comply with Eurocodes and Spanish standards, such as S355JR, S355J2 and S460 steel, which have excellent strength, toughness and corrosion resistance—suitable for Spain’s flood-prone environment. All steel materials are accompanied by authoritative inspection reports, and strict incoming inspection is carried out to ensure that the material performance meets the design requirements. In addition, according to the corrosion environment (such as humid environment after floods), EVERCROSS adopts advanced anti-corrosion treatments, such as hot-dip galvanizing and anti-corrosion coating, to prolong the service life of steel structure bridges. Third, Standardized Production Process and Strict Quality Control. EVERCROSS has a modern production base equipped with advanced steel structure processing equipment and a complete quality control system. The production process strictly follows Eurocodes and Spanish specifications, including cutting, welding, assembling, surface treatment and other links. The company’s welders have professional qualifications recognized by the European Union, and the welding quality is inspected by non-destructive testing (NDT) methods (such as ultrasonic testing, radiographic testing) to ensure that the welding performance meets the standard requirements. For key components related to flood resistance and structural stability, special quality inspections are carried out to avoid any quality hidden dangers. In addition, the company implements full-process production monitoring, and establishes detailed production records to ensure traceability of product quality. Fourth, Comprehensive Testing and Certification Compliance. Before the steel structure bridges leave the factory, EVERCROSS carries out comprehensive performance testing, including load testing, structural deformation testing, anti-corrosion performance testing, etc., to ensure that the product performance meets the design requirements and Spanish standards. At the same time, the company cooperates with authoritative third-party testing institutions recognized by the European Union to issue compliance testing reports and certifications, ensuring that the products can smoothly pass the customs inspection and on-site acceptance in Spain. For post-2026 flood disaster reconstruction projects, EVERCROSS also carries out special flood resistance testing according to the requirements of Spanish local specifications, ensuring that the bridges can resist extreme flood impacts. Fifth, Perfect After-Sales Service and Technical Support. EVERCROSS provides full-process after-sales service for Spanish customers, including on-site installation guidance, commissioning, regular inspection and maintenance guidance. After the bridges are put into use, the company tracks the operation status of the bridges in real time, and provides technical support for dealing with structural problems caused by floods or other disasters. Combining the experience of the 2026 Spanish flood disaster, EVERCROSS also provides customized maintenance plans for customers, helping to prolong the service life of steel structure bridges and ensure long-term stable operation. With its integrated industry and trade model, professional technical strength and strict quality control system, EVERCROSS has become a reliable partner for steel structure bridge projects in Spain, providing high-quality, standard-compliant and disaster-resistant permanent steel structure bridges for the Spanish market, and making positive contributions to the reconstruction and development of Spain’s infrastructure after the 2026 flood disaster. Conclusion In summary, the Eurocodes standard, combined with Spain’s local national annexes and special specifications, constitutes the complete design and construction standard system for permanent bridges in Spain. This system not only ensures the safety, reliability and durability of permanent bridges but also provides a solid technical guarantee for improving the disaster resistance (especially flood resistance) of bridges—this is particularly important after the February 2026 flood disaster, which has put forward higher requirements for Spain’s infrastructure construction. A permanent bridge, as a core component of the transportation network, with its excellent durability, strong load-bearing capacity and good adaptability, plays an irreplaceable role in regional economic development and post-disaster recovery. For B2B buyers and industry professionals in the Spanish bridge construction industry, understanding the Eurocodes standard and Spain’s local bridge design codes is the premise of carrying out project cooperation and ensuring project quality. As an integrated industry and trade enterprise specializing in steel structure bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO.,LTD. relies on its professional design team, strict material selection, standardized production process and perfect after-sales service to continuously provide steel structure bridges that fully comply with Spanish standards, helping to promote the upgrading and development of Spain’s permanent bridge infrastructure, and contributing to building a more resilient and reliable transportation network in Spain.

Introduction: Military Bridges and EVERCROSS’s Professional Support Military bridges are critical tactical assets, engineered to overcome obstacles and ensure unimpeded mobility for troops, vehicles, and supplies during operations, disaster relief, and emergency response. Their reliability, rapid deployability, and adaptability directly impact mission success. Backed by professional R&D capabilities and mature manufacturing strength, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is a trade and manufacturing foreign trade enterprise specializing in prefabricated highway steel bridges. With a professional bridge R&D center in Shanghai and a manufacturing base in Zhenjiang, the company is committed to providing high-quality, compliant bridge solutions—including products applicable to military and quasi-military scenarios. All bridge designs of EVERCROSS fully meet various international bridge design codes, ensuring superior performance, safety, and adaptability in even the harshest environments. FAQs About Military Bridges 1. What is a Military Bridge and Its Primary Purpose? A military bridge is a specialized structure designed to facilitate quick and efficient crossings over obstacles like rivers, ravines, or damaged infrastructure during military operations. Its main objective is to ensure the swift movement of troops, vehicles, and equipment, allowing military operations to proceed without delays caused by natural or man-made barriers. These bridges are engineered for resilience and rapid deployment, often featuring modular designs for easy assembly and disassembly—core characteristics that align with the prefabricated steel bridge expertise of EVERCROSS. In conflict situations or during disaster response, military bridges are essential for maintaining supply lines and enhancing maneuverability, making them invaluable assets in any military operation. Leveraging its R&D advantages in Shanghai and precision manufacturing in Zhenjiang, EVERCROSS’s prefabricated steel bridge technologies can be tailored to meet the rigorous demands of military bridge applications. 2. What Types of Military Bridges Are Commonly Used? Various types of military bridges are employed, each catering to distinct operational requirements. Among the most prominent are: Pontoon bridges: Float on water and can be assembled swiftly, ideal for crossing rivers and waterways in emergency scenarios. Bailey bridges: Known for their strength and adaptability, suitable for both vehicular and pedestrian traffic—one of the core prefabricated steel bridge types that EVERCROSS specializes in, leveraging its modular design and high-strength steel manufacturing capabilities. Mobile bridges: Can be deployed rapidly across different terrains, designed for quick maneuvering and assembly. Additionally, certain military units may utilize specialized bridges designed to support heavy loads or to operate effectively in specific environmental conditions. As a professional prefabricated highway steel bridge supplier, EVERCROSS’s products, backed by its Shanghai R&D center, can be customized to match these specialized military requirements. Familiarity with the different types of military bridges is crucial for selecting the appropriate one for a given mission, ensuring military forces can operate effectively across diverse landscapes. 3. How Quickly Can a Military Bridge Be Deployed in the Field? The time required to deploy a military bridge varies depending on the bridge type and the operational context. For example, pontoon bridges can often be erected within a few hours, while more intricate systems like Bailey bridges typically take longer, generally from several hours to a full day. Factors that influence deployment speed include the availability of personnel trained in bridge assembly, environmental conditions, and the equipment at hand. Notably, the modular and standardized design of EVERCROSS’s prefabricated steel bridges—manufactured in its Zhenjiang factory—greatly enhances deployment efficiency, as components are prefabricated, interchangeable, and require no on-site secondary processing. Military units are trained to set up these bridges promptly to minimize operational downtime, which is critical for maintaining momentum and effectiveness in the field. 4. What Factors Should Be Considered When Selecting a Military Bridge? When choosing a military bridge, several crucial factors must be taken into account to ensure optimal performance, all of which are addressed in EVERCROSS’s bridge design and manufacturing process: Weight capacity: It’s essential to understand the types of vehicles and equipment that will traverse the bridge—EVERCROSS’s high-strength steel components and precision engineering ensure excellent load-bearing performance. Terrain and environmental conditions: Such as the width and depth of rivers, which significantly influence the choice of bridge type—EVERCROSS’s R&D team in Shanghai specializes in designing bridges adaptable to diverse and harsh environments. Ease of assembly and disassembly: Critical for military efficiency, aligning with EVERCROSS’s modular prefabricated design philosophy. Logistical aspects: Including the transportability and storage of the bridge components—EVERCROSS optimizes component design for convenient transportation and storage, reducing logistical burdens. Moreover, all of EVERCROSS’s bridge designs comply with various international bridge design codes, ensuring that the selected bridge meets global safety and performance standards for military applications. 5. Are Military Bridges Suitable for Civilian Use After Deployment? Indeed, many military bridges can be repurposed for civilian applications following their initial deployment. Their robust design and engineering make them ideal for a variety of uses, such as temporary roadways during disaster relief efforts or for infrastructure repairs. In some instances, military bridges may be utilized in civil engineering projects where rapid deployment and substantial load capacity are necessary. However, transitioning from military to civilian use might require modifications to comply with local regulations and safety standards—an area where EVERCROSS excels, leveraging its R&D capabilities to adjust bridge designs while maintaining their core strength and reliability. As a trade and manufacturing enterprise, EVERCROSS also provides comprehensive support for the repurposing of prefabricated steel bridges, bridging the gap between military and civilian applications. Overall, military bridges provide versatility that can enhance civilian infrastructure, particularly in emergency situations, and EVERCROSS’s expertise ensures seamless adaptation and compliance. EVERCROSS: Your Trusted Partner for Military-Grade Prefabricated Bridges As a trade and manufacturing foreign trade enterprise, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. integrates R&D, production, and sales, with its professional R&D bridge research center in Shanghai driving technological innovation and its manufacturing base in Zhenjiang ensuring consistent product quality. Specializing in prefabricated highway steel bridges, the company’s products are engineered to meet the rigorous demands of military and civilian scenarios alike, with full compliance to international bridge design codes. Whether for military deployment, emergency rescue, or civilian infrastructure projects, EVERCROSS delivers reliable, efficient, and adaptable bridge solutions, leveraging its expertise to support global customers in overcoming crossing challenges.

Introduction In the fields of engineering construction, emergency rescue, and overseas infrastructure, temporary bridges play an irreplaceable role as a core hub connecting traffic and construction processes. The selection of temporary bridges directly determines project progress efficiency, construction safety, and overall cost control. As a professional trade and manufacturing foreign trade enterprise focusing on prefabricated highway steel bridges, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. has a professional R&D bridge research center in Shanghai and a manufacturing base in Zhenjiang. Relying on advanced R&D capabilities and mature production technology, we have in-depth insights into the application needs of temporary bridges in various scenarios. Through long-term practice and market verification, Bailey Bridge (also known as prefabricated steel truss bridge) has become the unrivaled best choice for temporary bridges due to its multiple core advantages, and it is highly recognized and widely used in domestic and foreign markets. Invented by British engineer Donald Bailey in 1938, the Bailey Bridge is a classic representative of prefabricated steel bridges, which is composed of standardized truss units, crossbeams, stringers, bridge decks, bearings and connectors made of high-strength steel. Combined with the R&D advantages of EVERCROSS BRIDGE TECHNOLOGY and the precision manufacturing capabilities of the Zhenjiang factory, the modern Bailey Bridge has been continuously upgraded and optimized, and its performance has been comprehensively improved, perfectly meeting the core demands of temporary bridges for efficiency, safety, versatility and economy. Core Advantages of Bailey Bridge as a Temporary Bridge 1. Standardized and Modular Design: Rapid Assembly and Disassembly The first core advantage of Bailey Bridge as the best temporary bridge is its standardized and modular design, which enables rapid assembly and disassembly. As a trade and manufacturing enterprise integrating R&D, production and sales, EVERCROSS BRIDGE TECHNOLOGY adopts a full-module standardized design system for the Bailey Bridges it operates. Core load-bearing components such as Bailey panels, supporting connectors (pins, bolts), crossbeams, bridge decks and bearings are all prefabricated and shaped products in the Zhenjiang factory. These components have high versatility and interchangeability, and no secondary processing such as welding or cutting is required during on-site construction, realizing "immediate transportation, immediate assembly, immediate disassembly and immediate transfer". With small hoisting equipment (truck cranes, excavator supporting spreaders) and professional construction teams, a conventional Bailey Bridge with a span of 10-30 meters can be assembled in one day and put into traffic simultaneously. In emergency rescue scenarios, by optimizing the construction process and increasing the number of operators, the goal of "on-site entry, on-site erection and on-site traffic on the same day" can be achieved, which effectively solves the industry pain point of tight construction period for temporary bridge erection. The disassembly process is also efficient and convenient. The disassembled components can be classified, packaged and transported without damage, laying a foundation for subsequent reuse, which fully adapts to the application characteristics of "short cycle and high turnover" of temporary projects. 2. High Load-Bearing Redundancy and Stable Mechanical Performance High load-bearing redundancy and stable mechanical performance provide a solid guarantee for the safe passage of various working conditions, which is another key advantage of Bailey Bridge surpassing other temporary bridges. The Bailey Bridge adopts a triangular truss structure design, which has clear mechanical force transmission paths and excellent bending resistance, shear resistance and lateral displacement resistance. The rated bearing capacity of a single Bailey panel can reach 270kN. Through the combination of multiple parallel and multi-layer stacking, the bridge bearing level can be flexibly adjusted to adapt to various traffic needs from pedestrians, small passenger cars to heavy engineering machinery and equipment (excavators, muck trucks, cranes) and emergency rescue vehicles, with a maximum bearing capacity of 50-ton heavy loads. With the support of EVERCROSS BRIDGE TECHNOLOGY's Shanghai R&D center, the components are made of high-quality low-alloy high-strength steel, and undergo double anti-corrosion treatment of shot blasting derusting, galvanizing and painting, which has outstanding corrosion resistance and wear resistance. It can serve stably for a long time under complex outdoor working conditions without frequent maintenance, effectively reducing on-site operation and maintenance costs, and taking into account the dual needs of "temporary use" and "safety and reliability". All products have passed the bearing capacity verification of third-party testing institutions and fully comply with relevant international and domestic standards for safe passage of temporary bridges. 3. Strong Terrain Adaptability and Simple Foundation Treatment The strong adaptability to the global terrain and no need for complex foundation treatment further enhance the competitiveness of Bailey Bridge as a temporary bridge. Temporary bridge erection scenarios often face problems such as complex terrain, limited site and difficult foundation construction. Bailey Bridge can effectively solve this industry problem with its flexible adaptation characteristics. Its foundation construction does not require complex foundation pit excavation, steel bar binding and concrete pouring processes. According to the on-site terrain conditions, it can flexibly adopt simple concrete cushion, steel support, natural rock foundation and other foundation forms, which greatly shortens the foundation construction period and reduces the foundation construction cost. At the same time, the bridge span can be flexibly adjusted through the splicing of Bailey panels, which can accurately adapt to small spans of several meters to the maximum single span of 60 meters. It can also realize the design of different bridge alignments such as straight lines and curves, adapting to various complex scenarios such as river crossing, gully connection, collapse road emergency repair and construction access crossing. Whether it is mountainous areas, waters, muddy areas or extreme environments such as deserts and plateaus, it can be stably implemented, showing extremely strong environmental adaptability. This advantage makes Bailey Bridge widely used in overseas infrastructure projects and "the Belt and Road" related projects, and can well adapt to the complex terrain conditions of various regions. 4. Recyclability and Whole-Life Cycle Economy The recyclability and whole-life cycle economy are important reasons why Bailey Bridge is favored by engineering enterprises, especially for trade and manufacturing enterprises like EVERCROSS BRIDGE TECHNOLOGY. For engineering enterprises, cost control of temporary projects is the key to improving project profitability, and the recyclable characteristics of Bailey Bridge are one of its core advantages. All its components have no loss after disassembly, and can be repeatedly assembled and used in different projects and scenarios. The amortization cost of a single use is much lower than that of traditional temporary bridge types, which is especially suitable for trade and manufacturing enterprises, overseas infrastructure projects and units with long-term temporary traffic needs. In addition, the single weight of Bailey Bridge components is reasonably designed (the weight of a conventional Bailey panel is about 270kg), which can be transported long distances by ordinary freight vehicles without large special transport equipment, effectively reducing transportation costs. On-site operation and maintenance do not require a professional operation and maintenance team. Only regular inspection and fastening of vulnerable parts such as connectors and bearings are needed. When local components are damaged, single components can be quickly replaced without overall maintenance, which further reduces the investment of manpower and material resources for on-site operation and maintenance and realizes the optimization of the whole-life cycle cost. Application Scenarios and Enterprise Commitment With the above core advantages, Bailey Bridge has become the preferred product in the field of temporary bridges at home and abroad, and plays an important role in various scenarios such as domestic large-scale infrastructure projects, municipal emergency rescue, flood and earthquake post-disaster reconstruction, and overseas aid construction projects. As a trade and manufacturing foreign trade enterprise specializing in prefabricated highway steel bridges, EVERCROSS BRIDGE TECHNOLOGY has been committed to promoting the application and development of Bailey Bridge, relying on its professional R&D capabilities and high-quality production level, to provide high-quality and reliable Bailey Bridge products and services for global customers, and help various projects achieve efficient, safe and economical construction. Frequently Asked Questions (FAQ) Q1: What is the maximum applicable span and bearing capacity of the Bailey Bridge? A: The maximum single span of a conventional prefabricated Bailey Bridge can reach 60 meters. If a larger span is needed, it can be realized by setting intermediate piers and multi-span continuous assembly. In actual engineering applications, the maximum continuous span can reach more than 100 meters. The bearing level can be flexibly adjusted according to the number of combined Bailey panels, which can meet the safe passage of 50-ton heavy engineering machinery and equipment and emergency vehicles at most. EVERCROSS BRIDGE TECHNOLOGY can also provide customized combination design according to the actual needs of customers. Q2: Can the Bailey Bridge be used normally under severe natural conditions such as floods and earthquakes? A: The triangular truss structure of the Bailey Bridge has excellent wind resistance, lateral displacement resistance and impact resistance. With wind resistance reinforcement and foundation reinforcement treatment, it can adapt to severe natural conditions such as conventional floods and minor earthquakes. In emergency rescue scenarios such as floods and collapses, Bailey Bridge is the preferred product for temporary emergency repair, which can be quickly erected under complex and harsh environments to ensure the smooth flow of rescue channels. Its safety performance has been tested in many emergency scenarios and fully complies with relevant safety specifications. With the technical support of EVERCROSS BRIDGE TECHNOLOGY's R&D center, its adaptability to harsh environments can be further improved according to actual needs. Q3: What is the service life and reuse times of the Bailey Bridge? A: The core components of the Bailey Bridge are made of low-alloy high-strength steel. After double anti-corrosion treatment, the service life of the body can reach more than 15 years. Under the premise of standardized use and regular maintenance, it can be reused 8-10 times. Even if local components are aged or damaged, they can be put into use again only by replacing the corresponding single components, which greatly improves the utilization rate of components and reduces the comprehensive cost. EVERCROSS BRIDGE TECHNOLOGY provides professional maintenance guidance to help customers maximize the service life and reuse times of products.

As a professional integrated industrial and trade enterprise specializing in modular steel bridge export, EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. has long focused on providing high-quality, standard-compliant modular steel bridges to global markets, including South America, Africa, and Southeast Asia. With our manufacturing base in Zhenjiang, Jiangsu Province, and a professional R&D team in Shanghai, we integrate design, production, quality control, and export services, ensuring our products fully comply with various international bridge design standards. In 2026, Turkey—endowed with a unique transcontinental geography, diverse climatic conditions, and ambitious infrastructure investment plans—emerges as a key emerging market with soaring demand for modular steel bridges. Let’s explore Turkey’s geographical and climatic characteristics, analyzes the core drivers of its 2026 modular steel bridge demand, and elaborates on how EVERCROSS’s strengths align with these market needs, concluding with answers to common inquiries from Turkish clients. What is a Modular Steel Bridge? Before delving into Turkey’s specific demand drivers, it is essential to clarify what a modular steel bridge is and why it is uniquely suited to address Turkey’s infrastructure challenges. A modular steel bridge is a prefabricated structural system composed of standardized steel components, including truss panels, decking, connecting fasteners, and support structures. All components are precision-manufactured in factories—such as EVERCROSS’s Zhenjiang base—and then transported to the construction site for rapid assembly, without the need for on-site casting or heavy construction equipment. Compared with traditional cast-in-place concrete bridges, modular steel bridges boast distinct advantages that align with Turkey’s needs: rapid deployment (assembly can be completed in days to weeks, rather than months), flexible customization (spans, load capacities, and deck types can be adjusted to fit diverse scenarios like river crossings, mountain valleys, and coastal areas), high strength-to-weight ratio (lightweight yet capable of bearing heavy traffic loads), excellent durability (with professional anti-corrosion treatments, it can resist harsh climates), and recyclability (components can be disassembled, reused, or recycled, aligning with global green infrastructure trends). These inherent advantages make modular steel bridges an ideal solution for Turkey’s 2026 infrastructure ambitions, especially in remote regions and post-disaster reconstruction scenarios. Turkey’s Geography, Climate: Key Factors Shaping Bridge Demand Turkey’s unique geographical and climatic conditions pose distinctive challenges to its bridge infrastructure, while also driving the urgent need for flexible, durable, and adaptive modular steel bridges. Geographically, Turkey straddles Asia and Europe, with 97% of its territory located on the Anatolian Peninsula in West Asia and 3% on the Balkan Peninsula in Southeast Europe, connected by the Turkish Straits—the only natural waterway linking the Black Sea and the Mediterranean Sea. This transcontinental location makes Turkey a critical regional logistics hub, but its terrain is dominated by plateaus and mountains, with narrow coastal plains, numerous rivers, and a 7,200-kilometer coastline. Such topographical features require bridges that can adapt to diverse scenarios, including mountain valleys, river crossings, and coastal areas, while facilitating connectivity between European and Asian territories. Climatically, Turkey features three main climate types due to its varied terrain and coastal distribution: Mediterranean climate in the western and southern coastal areas (hot and dry summers, mild and wet winters), temperate oceanic climate along the Black Sea coast (warm and humid summers, cold and wet winters), and continental climate in the central Anatolian Plateau (distinct four seasons, hot and dry summers, cold and rainy winters with large temperature differences). Additionally, Turkey is located at the junction of three tectonic plates, making it a seismically active region prone to earthquakes, and it recently set a national high temperature record of 50.5°C in July 2025. These climatic and geological challenges—including extreme temperatures, heavy rainfall, coastal salt spray, and seismic activity—demand bridges with strong corrosion resistance, temperature adaptability, and structural stability, which modular steel bridges are well-equipped to provide. 2026 Turkey’s Modular Steel Bridge Demand 2026 marks a pivotal year for Turkey’s infrastructure development, with multiple factors converging to drive unprecedented demand for modular steel bridges. The key drivers are closely tied to the country’s infrastructure investment plans, post-disaster reconstruction needs, geographical connectivity goals, and climate adaptation requirements. First, massive infrastructure investment allocations. In 2026, Turkey has earmarked over ₺508 billion for transportation and communications, accounting for 26.5% of its total public investment budget—the largest share among all sectors. While railways are the top priority with ₺261.58 billion allocated, highways follow closely with ₺166.96 billion, including 565 highway projects and 22 motorway projects. These projects require a large number of bridges to cross rivers, valleys, and coastal areas, and modular steel bridges—with their rapid assembly, flexible customization, and cost-effectiveness—are the ideal choice for accelerating project schedules, especially in remote mountainous and coastal regions where traditional cast-in-place bridges face construction difficulties. Second, post-earthquake and climate-resilient infrastructure needs. Turkey is one of the world’s most seismically active regions, with frequent earthquakes caused by complex tectonic plate movements. The 2023 7.8-magnitude earthquake severely damaged infrastructure in ten-plus cities, including bridges, highlighting the need for earthquake-resistant structures. Modular steel bridges, with their lightweight yet high-strength properties and flexible connection designs, can better withstand seismic impacts compared to traditional concrete bridges. Additionally, the country’s extreme weather—such as record-high temperatures, heavy rainfall, and coastal salt spray—accelerates the degradation of existing bridges. Modular steel bridges, when equipped with professional anti-corrosion treatments, offer superior durability and corrosion resistance, extending service life in harsh environments. Third, transcontinental connectivity and logistics hub construction. As a key hub connecting Europe and Asia, Turkey aims to strengthen its role in international trade corridors through infrastructure upgrades. This requires bridges that can accommodate heavy freight traffic, as well as pedestrian and passenger traffic, to support cross-border logistics. Modular steel bridges can be customized to meet dual-purpose (vehicle and pedestrian) and heavy-load requirements, and their standardized components enable seamless integration with existing transportation networks. For example, the Manavgat Bridge in southern Turkey—an orthotropic steel deck bridge designed to AASHTO standards—demonstrates the successful application of steel bridges in Turkey’s highway connectivity projects. Fourth, compliance with evolving international design standards. Turkey’s bridge design has traditionally adopted modified versions of AASHTO LFD or ASD standards, but recent global shifts to LRFD methods have prompted the country to calibrate its own bridge design standards, with a target reliability index of 4.00 for basic gravity load combinations—higher than the 3.50 used in the U.S.. This emphasis on safety and standard compliance creates demand for modular steel bridges that meet international standards such as AASHTO, Eurocode EN 1993, and the upcoming Turkish LRFD standards, ensuring structural safety and project approval. EVERCROSS: Meeting Turkey’s 2026 Modular Steel Bridge Demand with Professional Strength As a professional modular steel bridge exporter with integrated industrial and trade capabilities, EVERCROSS is well-positioned to meet Turkey’s 2026 demand, leveraging our R&D expertise, manufacturing strength, and international standard compliance. Our Shanghai R&D team, composed of senior steel structure engineers, is well-versed in international bridge design standards including AASHTO, Eurocode EN 1993, and Australian AS 5100, and is actively familiar with Turkey’s evolving LRFD calibration requirements. We can customize modular steel bridge solutions tailored to Turkey’s diverse climatic and geographical conditions: for coastal areas (Mediterranean, Black Sea), we adopt three-layer composite anti-corrosion treatment (sandblasting derusting + epoxy zinc-rich primer + polyurethane topcoat) to resist salt spray corrosion; for central Anatolia’s continental climate, we use weathering steel (Q355NH) to adapt to large temperature differences; for seismic-prone regions, we optimize connection designs to enhance earthquake resistance, aligning with Turkey’s high reliability index requirements. Our Zhenjiang manufacturing base, covering over 20,000 square meters, is equipped with advanced CNC cutting machines, automatic welding lines, and anti-corrosion workshops, ensuring mass production of standardized modular components with high precision. We strictly implement quality control throughout the production process, conducting comprehensive inspections including material performance testing, welding quality inspection, and anti-corrosion performance testing, and provide third-party inspection reports to confirm compliance with international and Turkish standards. Moreover, our integrated industrial and trade model enables seamless delivery from design to installation. Our professional sales team is familiar with Turkey’s import policies, logistics channels, and infrastructure needs, providing one-stop services including project consultation, program design, logistics arrangement, and on-site technical guidance. We can ensure on-time delivery of modular steel bridges for Turkey’s 2026 infrastructure projects, supporting the country’s goal of becoming a regional logistics hub. FAQ: Common Inquiries from Turkish Clients Q1: Can your modular steel bridges comply with Turkey’s upcoming LRFD bridge design standards and the required target reliability index of 4.00? A1: Absolutely. Our Shanghai R&D team has closely tracked Turkey’s LRFD calibration progress and is proficient in the new design requirements, including the target reliability index of 4.00 for basic gravity load combinations. We integrate these requirements into our bridge design, conduct detailed structural calculations and reliability analysis, and provide comprehensive design reports to confirm compliance. Our products also fully meet existing Turkish standards based on modified AASHTO specifications, ensuring seamless project approval. Q2: How do your modular steel bridges adapt to Turkey’s diverse climates, especially coastal salt spray and central Anatolia’s extreme temperature differences? A2: We customize our solutions for Turkey’s climatic diversity. For coastal areas (e.g., Mediterranean, Black Sea), we adopt three-layer composite anti-corrosion treatment and add copper/chromium alloys to steel components to enhance salt-spray resistance. For central Anatolia’s continental climate, we use Q355NH weathering steel, which forms a dense self-healing oxide film to resist corrosion and maintain mechanical stability between -40°C and 60°C, adapting to extreme temperature differences. We also add UV stabilizers to coatings for regions with high temperatures, ensuring long-term durability. Q3: Can your modular steel bridges withstand Turkey’s seismic activity and meet earthquake-resistant requirements? A3: Yes. Turkey’s seismic activity is a key consideration in our design. We optimize the modular connection design to enhance structural flexibility and seismic resistance, using high-strength bolts and fatigue-resistant welds to ensure the bridge can withstand seismic impacts without collapse. Our bridges are designed in accordance with Eurocode EN 1993 (seismic design for steel structures) and local seismic standards, and we conduct finite element simulation analysis to verify seismic performance, making them suitable for Turkey’s tectonically active regions. Q4: What is the lead time for delivering modular steel bridges to Turkey, and can you meet the schedule of our 2026 infrastructure projects? A4: For standard dual-lane modular steel bridges (30-80m span), our production cycle is 20-25 days, and sea transportation from Chinese ports to Turkish ports (e.g., Istanbul, Izmir) takes 20-28 days. On-site assembly takes 5-8 days, with a total lead time of 55-70 days. We prioritize Turkey’s 2026 infrastructure projects, optimizing our production and logistics schedules to ensure on-time delivery. For urgent projects, we can expedite production to shorten lead time by 30%. Q5: Do you provide on-site technical support and after-sales service for projects in Turkey? A5: Yes. We send professional engineers to Turkey to provide on-site assembly guidance, train local construction teams, and conduct post-installation inspections. We offer a 2-year warranty, covering free maintenance and component replacement for non-human damage. We also establish long-term cooperation with local technical service providers in Turkey to offer timely after-sales support, ensuring the stable operation of our modular steel bridges throughout their service life. In conclusion, 2026 presents unprecedented opportunities for modular steel bridges in Turkey, driven by massive infrastructure investment, post-disaster reconstruction needs, and the country’s ambition to become a regional logistics hub. EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD., with our integrated industrial and trade strength, professional R&D capabilities, international standard compliance, and climate-adaptive solutions, is ready to partner with Turkish clients to support the country’s infrastructure development. We are committed to delivering high-quality, reliable modular steel bridges that meet Turkey’s unique geographical, climatic, and technical requirements, contributing to the country’s transcontinental connectivity and economic growth.

As an engineer from EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD., a professional steel structure bridge manufacturing company with years of experience in Bailey bridge design, production and installation, I have witnessed the critical role of high-strength bolts in ensuring the safety, stability and durability of Bailey bridge structures. Bailey bridges are widely used in emergency rescue, temporary transportation, construction sites and permanent low-cost transportation projects due to their modular design, quick assembly and strong adaptability to complex terrain. However, the reliability of the entire bridge structure largely depends on the quality and rational selection of high-strength bolts, which are the core connecting components that integrate individual steel modules into a stable load-bearing system. This article will elaborate on how to scientifically select high-strength bolts for Bailey bridge installation, covering the definition of high-strength bolts, their necessity in steel structure bridge installation, grade selection, key roles in Bailey bridge installation, influencing factors and common customer questions. 1. What Are High-Strength Bolts? High-strength bolts refer to specialized fasteners made of high-strength alloy steel, which undergo strict heat treatment processes (such as quenching and tempering) to achieve excellent mechanical properties, including high tensile strength, yield strength, hardness and toughness. Unlike ordinary carbon steel bolts (which have a tensile strength below 400MPa), high-strength bolts typically have a tensile strength of more than 800MPa, and their performance is strictly standardized by international and national standards such as AASHTO M325, EN 14399 and GB/T 1228. The core characteristics of high-strength bolts lie in their ability to bear large pre-tension and shear force, maintain stable connection performance under long-term dynamic loads, and resist corrosion, fatigue and other harsh service conditions. Common high-strength bolts used in bridge engineering include hexagon head bolts, torsion shear type high-strength bolts and large-diameter high-strength bolts, which are selected according to the specific connection form and load requirements of the bridge. 2. Why High-Strength Bolts Are Necessary for Steel Structure Bridge Installation Steel structure bridges, including Bailey bridges, are composed of multiple steel modules (such as beams, columns, trusses and connecting plates) that need to be firmly connected to form an integrated load-bearing structure. The connection effect directly determines the overall safety and service life of the bridge, so the selection of fasteners is particularly critical. Compared with ordinary bolts, high-strength bolts are indispensable in steel structure bridge installation for the following reasons: First, high-strength bolts can provide sufficient pre-tension. When installed, high-strength bolts are tightened to generate a large pre-tension, which clamps the connected steel plates tightly, so that the shear force between the connecting surfaces is transmitted through the friction force between the plates, rather than relying on the shear resistance of the bolt rod itself. This friction-type connection method greatly improves the bearing capacity and stability of the connection, and avoids the shear failure of the bolt rod under large loads, which is crucial for steel structure bridges that bear dynamic loads such as vehicle weight, wind load and seismic load. Second, high-strength bolts have excellent fatigue resistance. Steel structure bridges are in a state of dynamic load for a long time, and the connection parts are prone to fatigue damage due to repeated stress. High-strength bolts are made of high-quality alloy steel and processed by strict heat treatment, which can effectively resist fatigue crack initiation and expansion, ensuring that the connection remains stable under long-term service conditions and reducing the risk of bridge failure due to bolt fatigue. Third, high-strength bolts have good interchangeability and installation efficiency. The production of high-strength bolts strictly follows standard specifications, with uniform size and performance, which can be freely interchanged during installation, greatly improving the construction efficiency. Especially for Bailey bridges that require quick assembly, the use of high-strength bolts can shorten the installation cycle and ensure the timeliness of project completion. Finally, high-strength bolts can adapt to harsh service environments. Steel structure bridges are often exposed to outdoor environments, facing corrosion from rain, snow, humidity, salt spray (in coastal areas) and other factors. High-strength bolts can be treated with anti-corrosion measures such as hot-dip galvanizing, Dacromet coating and anti-rust paint, which can effectively improve their corrosion resistance and extend the service life of the bridge connection parts. 3. Selection of High-Strength Bolt Grades for Bailey Bridge Installation The grade of high-strength bolts is determined by their tensile strength and yield ratio, and the common grades used in Bailey bridge installation are 8.8, 10.9 and 12.9. The selection of bolt grades must be based on the load characteristics, connection form, service environment and design standards of the Bailey bridge to ensure that the bolts can match the bearing capacity of the bridge structure. As an experienced steel structure bridge manufacturer, EVERCROSS BRIDGE TECHNOLOGY usually recommends the following grade selection principles for customers: Grade 8.8 high-strength bolts: This grade of bolt has a tensile strength of 800MPa and a yield ratio of 0.8, which is suitable for non-critical secondary connections of Bailey bridges, such as the connection of auxiliary components (handrails, guardrails, temporary supports), light-load truss connections and non-main load-bearing parts. Grade 8.8 bolts have the advantages of low cost and stable performance, and are widely used in temporary Bailey bridge projects with small load requirements. Grade 10.9 high-strength bolts: With a tensile strength of 1040MPa and a yield ratio of 0.9, this grade is the most commonly used in Bailey bridge installation, suitable for main load-bearing connections, such as truss node connections, beam-column connections, and the connection between Bailey beams and supports. Most permanent and temporary Bailey bridges bear medium and large loads, and Grade 10.9 bolts can provide sufficient pre-tension and shear bearing capacity to ensure the overall stability of the bridge. At EVERCROSS, we use Grade 10.9 high-strength bolts as the standard configuration for most Bailey bridge main connections, which have been verified by a large number of engineering practices. Grade 12.9 high-strength bolts: This grade of bolt has a tensile strength of 1220MPa and a yield ratio of 0.9, which is a high-performance high-strength bolt, suitable for critical load-bearing connections of Bailey bridges under special conditions, such as large-span Bailey bridges, heavy-load Bailey bridges (bearing large engineering vehicles, equipment), and Bailey bridges used in seismic-prone areas or harsh environments (coastal salt spray, high humidity). Grade 12.9 bolts have higher strength and fatigue resistance, but their cost is relatively high. They are usually selected when the bridge design requires higher connection reliability, and need to be matched with corresponding high-strength nuts and washers to avoid uneven stress. It should be emphasized that the selection of high-strength bolt grades must not only consider the load requirements but also comply with the relevant design standards (such as AASHTO, EN 14399, GB/T 1228) and the technical requirements of the Bailey bridge. At the same time, the matching of bolts, nuts and washers must be ensured—high-strength bolts of different grades must be used with nuts and washers of the same grade to avoid premature failure due to uneven material performance. 4. The Critical Role of High-Strength Bolts in Bailey Bridge Installation Bailey bridges are modular steel structure bridges, and their installation process is to assemble prefabricated steel modules into a complete bridge structure through connecting components. High-strength bolts, as the core connecting fasteners, play an irreplaceable role in Bailey bridge installation, which can be analyzed from multiple angles: From the perspective of structural stability: The Bailey bridge’s load-bearing system is composed of multiple truss units and beam modules. High-strength bolts clamp these modules tightly through pre-tension, forming a rigid integral structure. Without high-strength bolts, the individual modules can only be loosely connected, which cannot bear the design load at all, and even collapse during installation or use. The pre-tension of high-strength bolts ensures the friction between the connected surfaces, transmits the shear force and tensile force between the modules, and maintains the overall stability of the bridge under static and dynamic loads. From the perspective of installation efficiency: Bailey bridges are widely used in emergency and temporary projects, requiring quick assembly and disassembly. High-strength bolts have the characteristics of standardization and interchangeability, and can be quickly installed and tightened with professional tools (such as torque wrenches, torsion shear wrenches), which greatly shortens the installation cycle. Compared with other connection methods (such as welding), the use of high-strength bolts avoids the need for on-site welding equipment and professional welders, reduces the difficulty of construction, and improves the efficiency of bridge installation. In emergency rescue scenarios, the quick assembly of Bailey bridges relying on high-strength bolts can win valuable time for disaster relief and transportation. From the perspective of structural safety and durability: Bailey bridges often bear complex loads such as vehicle weight, wind load, and temperature stress, and the connection parts are the weak links of the structure. High-strength bolts have excellent mechanical properties and fatigue resistance, which can resist the damage caused by long-term dynamic loads and ensure the safety of the bridge during service. At the same time, after anti-corrosion treatment, high-strength bolts can effectively resist the erosion of the external environment, reduce the occurrence of corrosion and rust, and extend the service life of the bridge. For permanent Bailey bridges, the selection of high-quality high-strength bolts is an important guarantee for the long-term safe operation of the bridge. From the perspective of maintainability: During the service life of the Bailey bridge, the connection parts need to be inspected and maintained regularly. High-strength bolts can be easily disassembled and replaced without damaging the steel modules, which is convenient for daily inspection, maintenance and replacement of damaged bolts. This maintainability not only reduces the maintenance cost of the bridge but also ensures that potential safety hazards can be eliminated in a timely manner, improving the reliability of the bridge structure. 5. Influencing Factors in the Selection of High-Strength Bolts for Bailey Bridge Installation When selecting high-strength bolts for Bailey bridge installation, it is not only necessary to determine the appropriate grade but also to comprehensively consider various influencing factors to ensure that the selected bolts are compatible with the bridge structure and service conditions. The main influencing factors include the following aspects: Load characteristics: The load borne by the Bailey bridge is the core factor determining the selection of high-strength bolts, including static load (such as the self-weight of the bridge, the weight of fixed equipment) and dynamic load (such as the weight of passing vehicles, wind load, seismic load). For bridges bearing large dynamic loads, high-grade high-strength bolts (such as Grade 12.9) with better fatigue resistance should be selected; for bridges bearing small static loads, Grade 8.8 or 10.9 bolts can be selected to reduce costs. Service environment: The service environment of the Bailey bridge directly affects the corrosion resistance requirements of high-strength bolts. For bridges used in coastal areas, high-humidity areas or areas with serious industrial pollution, high-strength bolts with advanced anti-corrosion treatment (such as hot-dip galvanizing + Dacromet coating) should be selected to prevent bolt corrosion and rust; for bridges used in dry and clean inland areas, ordinary anti-corrosion treated bolts (such as galvanizing) can be selected. Connection form: The connection form of the Bailey bridge (such as friction-type connection, shear-type connection) also affects the selection of high-strength bolts. Friction-type connections rely on the friction between the connected surfaces to transmit shear force, which requires high-strength bolts to provide sufficient pre-tension, so bolts with good toughness and high pre-tension capacity should be selected; shear-type connections rely on the shear resistance of the bolt rod to transmit shear force, which requires bolts with high shear strength and hardness. Design standards and specifications: The selection of high-strength bolts must comply with the relevant design standards and specifications of the project, such as AASHTO standards for projects in North America and Southeast Asia, Eurocode standards for projects in Europe and Africa, and GB standards for domestic projects in China. Different standards have different requirements for the performance, grade and installation of high-strength bolts, which must be strictly followed to ensure the compliance and safety of the bridge structure. Cost control: Under the premise of meeting the design requirements and safety standards, the cost of high-strength bolts should be reasonably controlled. High-grade bolts (such as Grade 12.9) have higher performance but higher cost, while low-grade bolts (such as Grade 8.8) have lower cost but limited performance. Therefore, it is necessary to balance the relationship between performance and cost, select the most cost-effective bolt grade and type according to the actual needs of the project. 6. Frequently Asked Questions (FAQs) About Steel Bridge Installation Connections In the process of communicating with customers about Bailey bridge projects, EVERCROSS BRIDGE TECHNOLOGY engineers often receive various questions about steel bridge installation connections. The following are the most common questions and professional answers to help customers better understand the selection and use of high-strength bolts in Bailey bridge installation: Q1: Can ordinary bolts be used instead of high-strength bolts in Bailey bridge installation to reduce costs? A1: No, ordinary bolts cannot be used instead of high-strength bolts. Ordinary bolts have low tensile strength, yield strength and fatigue resistance, and cannot provide sufficient pre-tension and shear bearing capacity. If ordinary bolts are used, the connection parts will be loose under the load of the Bailey bridge, and even shear failure, leading to bridge deformation, damage or collapse. Although high-strength bolts have higher costs, they are the core guarantee for the safety and stability of the Bailey bridge. Using ordinary bolts to replace high-strength bolts will bring serious potential safety hazards and even increase the overall cost due to subsequent maintenance and repair. Therefore, we strongly recommend that customers use high-strength bolts that meet the design standards. Q2: What is the difference between Grade 10.9 and Grade 12.9 high-strength bolts, and how to choose between them for Bailey bridge installation? A2: The main differences between Grade 10.9 and Grade 12.9 high-strength bolts lie in their mechanical properties and application scenarios. Grade 10.9 bolts have a tensile strength of 1040MPa and a yield ratio of 0.9, which can meet the load requirements of most Bailey bridge main connections and are the most commonly used grade. Grade 12.9 bolts have a higher tensile strength (1220MPa) and yield ratio (0.9), with better fatigue resistance and load-bearing capacity, suitable for large-span, heavy-load Bailey bridges or bridges used in harsh environments. The selection between the two depends on the design load, span and service environment of the Bailey bridge. For ordinary medium-span and medium-load Bailey bridges, Grade 10.9 bolts are sufficient; for special requirements such as heavy load and large span, Grade 12.9 bolts should be selected. Our engineers will provide professional grade selection suggestions according to the specific project design scheme. Q3: How to ensure the installation quality of high-strength bolts in Bailey bridge construction? A3: Ensuring the installation quality of high-strength bolts requires strict control from three aspects: pre-installation, during installation and post-installation. First, pre-installation: Check the quality of high-strength bolts (including batch certification, appearance, size), and ensure that the bolts, nuts and washers are matched; clean the connected surfaces to remove dirt, rust and oil, which affects the friction coefficient. Second, during installation: Use calibrated professional tools (torque wrench, torsion shear wrench) to tighten the bolts according to the specified torque or angle to ensure sufficient pre-tension; avoid over-tightening or under-tightening, which will affect the connection performance. Third, post-installation: Conduct 100% visual inspection of the bolts, check the tightening marks and exposed threads; randomly inspect the pre-tension of the bolts by ultrasonic testing or torque recheck to ensure that the installation quality meets the standards. In addition, our company will send professional engineers to provide on-site technical guidance if necessary, to ensure the correct installation of high-strength bolts. Q4: What is the service life of high-strength bolts in Bailey bridges, and do they need regular replacement? A4: The service life of high-strength bolts in Bailey bridges is usually 15-25 years, which depends on the anti-corrosion treatment, service environment and maintenance level. High-strength bolts treated with advanced anti-corrosion measures (such as hot-dip galvanizing + Dacromet coating) used in dry and clean environments can have a longer service life (up to 25 years); bolts used in coastal salt spray or high-humidity environments have a relatively shorter service life (15-20 years). Regular inspection and maintenance are required during use: conduct visual inspection every 1-2 years to check for corrosion, rust and loose bolts; conduct comprehensive inspection and torque recheck every 5 years. If bolts are found to be corroded, damaged or with insufficient pre-tension, they should be replaced in a timely manner to ensure the safety of the bridge. For permanent Bailey bridges, we recommend formulating a regular maintenance plan to extend the service life of high-strength bolts and the entire bridge structure. In conclusion, the selection of high-strength bolts is a key link in Bailey bridge installation, which is directly related to the safety, stability, durability and installation efficiency of the bridge. As a professional steel structure bridge manufacturing company, EVERCROSS BRIDGE TECHNOLOGY has rich experience in the selection and application of high-strength bolts, and can provide customers with personalized solutions according to the specific needs of each project. We always adhere to the principle of "quality first, safety first", and use high-quality high-strength bolts and scientific installation guidance to ensure that each Bailey bridge project meets the highest standards of safety and reliability.

Shanghai, China – July 31, 2025 – A vital new transportation link has been successfully commissioned in Ethiopia with the completion of a 40-meter Bailey bridge. Constructed by EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD., this critical infrastructure project directly addresses longstanding mobility challenges for local communities, significantly reducing travel times and enhancing safety. What is a Bailey Bridge?The Bailey bridge is a renowned, highly versatile type of portable, prefabricated truss bridge. Its genius lies in its design: Modularity: It's constructed from standardized, interchangeable steel panels, pins, and transoms (cross-beams). These components are relatively lightweight and easy to transport. Rapid Assembly: Sections can be easily lifted into place manually or with light machinery, allowing for incredibly fast construction compared to traditional bridges, often in days or weeks. Strength & Adaptability: Despite its prefabricated nature, the Bailey bridge is remarkably strong and can be configured into various lengths and load capacities by adding more panels and supports. It can also be strengthened ("double-story" or "triple-story") for heavier loads. Proven History: Originally designed by Sir Donald Bailey for military use during World War II, its robustness, simplicity, and speed of deployment made it invaluable. This legacy continues in civilian applications worldwide, particularly in disaster relief and rural infrastructure development where speed and cost-effectiveness are paramount.

We are thrilled to announce a significant milestone in our international expansion! EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. has been officially awarded the contract for the Telefomin 16km Ring Road Project in the West Sepik Province of Papua New Guinea. This prestigious project involves the design, supply, and installation of five (5) modern, two-lane Bailey Bridges, marking a major achievement as we solidify our presence in the demanding Oceania market, specifically targeting projects compliant with the rigorous AS/NZS (Australian/New Zealand Standards) series. This victory underscores our expertise in delivering critical infrastructure solutions that meet the highest international benchmarks. The Telefomin Road project is vital for connecting communities and fostering development in a remote region of PNG. The Bailey Bridge Advantage: The Bailey Bridge system is a cornerstone of robust, rapidly deployable infrastructure. These are prefabricated, modular steel truss bridges, renowned for their: Strength & Durability: Engineered to handle substantial loads, including heavy vehicles and challenging environmental conditions common in PNG. Rapid Construction: Their modular design allows for swift assembly using relatively simple equipment and local labor, minimizing disruption and accelerating project timelines significantly compared to traditional bridge building. Versatility & Adaptability: Easily configured to span various distances and fit diverse terrains – ideal for the demanding landscapes of West Sepik Province. Cost-Effectiveness: Offering a reliable and efficient solution, maximizing value for critical infrastructure investment. Proven Compliance: Our bridges will be meticulously designed and constructed to fully comply with AS/NZS 5100.6 (Bridge Design - Steel and Composite Construction) and other relevant AS/NZS standards, ensuring long-term safety, performance, and regulatory acceptance. Transforming Lives in West Sepik: The construction of these five new two-lane Bailey Bridges along the Telefomin Road is far more than just an infrastructure project; it's a catalyst for profound positive change for the local communities: Unlocking Vital Access: Replacing unreliable or non-existent river crossings, these bridges will provide year-round, all-weather access between Telefomin and surrounding villages. This eliminates dangerous river fording, especially critical during the rainy season. Enhancing Safety: Safe, reliable bridges drastically reduce the risks associated with crossing flooded rivers or using unstable makeshift crossings, protecting lives. Boosting Economic Opportunity: Reliable transport links enable farmers to get goods to markets efficiently, allow businesses to receive supplies, attract investment, and create local jobs. Economic activity will flourish. Improving Healthcare Access: Consistent access means residents can reliably reach clinics and hospitals for essential medical care, vaccinations, and emergencies, significantly improving health outcomes. Empowering Education: Children will no longer miss school due to impassable rivers. Teachers and supplies can reach remote schools consistently, enhancing educational opportunities. Strengthening Community Ties: Easier travel fosters stronger social connections between villages and families, promoting cultural exchange and community resilience. A Testament to Expertise and Commitment: Winning this competitive tender against AS/NZS standards highlights EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. 's technical prowess, commitment to quality, and deep understanding of the infrastructure needs within the Oceania region. We are proud to contribute our world-class Bailey Bridge solutions to such a transformative project. We extend our sincere gratitude to the authorities in Papua New Guinea for their trust and look forward to a highly successful partnership in delivering this vital infrastructure. This project exemplifies our dedication to "Building Connections, Empowering Communities" worldwide. Here's to building a brighter, more connected future for the people of Telefomin and West Sepik Province! For more information on our international projects and Bailey Bridge solutions, please visit our website or contact our international division. EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. - Building Global Infrastructure Excellence

In the realm of civil infrastructure, ensuring the safety, durability, and serviceability of bridges is paramount. For highway bridges across the United States, the definitive guide governing their design and construction is the AASHTO LRFD Bridge Design Specifications. Developed and maintained by the American Association of State Highway and Transportation Officials (AASHTO), this comprehensive document represents the culmination of decades of research, testing, and practical engineering experience, establishing itself as the national standard for highway bridge design. What Are the AASHTO LRFD Bridge Design Specifications? Fundamentally, the AASHTO LRFD Specifications are a codified set of rules, procedures, and methodologies used by structural engineers to design new highway bridges and evaluate existing ones. The acronym "LRFD" stands for Load and Resistance Factor Design, which signifies a fundamental shift from older design philosophies like Allowable Stress Design (ASD) or Load Factor Design (LFD). LRFD is a probability-based approach. It explicitly acknowledges the inherent uncertainties in both the loads a bridge must carry throughout its lifetime (traffic, wind, earthquakes, temperature changes, etc.) and the resistance (strength) of the materials (concrete, steel, soil, etc.) used to build it. Instead of applying a single, global safety factor to reduce material strength (as in ASD), LRFD employs distinct Load Factors (γ) and Resistance Factors (φ). Load Factors (γ): These are multipliers (greater than 1.0) applied to the various types of loads a bridge might experience. They account for the possibility that actual loads could be higher than predicted nominal values, that multiple severe loads might occur simultaneously, and the potential consequences of failure. More variable and less predictable loads, or those with higher consequences of underestimation, receive higher load factors. Resistance Factors (φ): These are multipliers (less than or equal to 1.0) applied to the nominal strength of a structural component (e.g., a beam, a column, a pile). They account for uncertainties in material properties, workmanship, dimensions, and the accuracy of the predictive equations used to calculate strength. Factors are calibrated based on reliability theory and historical performance data for different materials and failure modes. The core design requirement in LRFD is expressed as: Factored Resistance ≥ Factored Load Effects. In essence, the strength of the bridge component, reduced by its resistance factor, must be greater than or equal to the combined effect of all applied loads, each amplified by its respective load factor. This approach allows for a more rational and consistent level of safety across different bridge types, materials, and load combinations compared to older methods. Primary Domain of Application: Highway Bridges The AASHTO LRFD Specifications are specifically tailored for the design, evaluation, and rehabilitation of highway bridges. This encompasses a vast array of structures carrying vehicular traffic over obstacles like rivers, roads, railways, or valleys. Key applications include: New Bridge Design: This is the primary application. The specifications provide the framework for designing all structural elements of a highway bridge, including: Superstructure: Decks, girders (steel, concrete, prestressed concrete, composite), trusses, bearings, expansion joints. Substructure: Piers, abutments, columns, pier caps, wing walls. Foundations: Spread footings, driven piles (steel, concrete, timber), drilled shafts, retaining walls integral to the bridge. Appurtenances: Railings, barriers, drainage systems (as they relate to structural loads). Bridge Evaluation and Rating: Engineers use the LRFD principles and load factors to assess the load-carrying capacity (rating) of existing bridges, determining if they can safely carry current legal loads or require posting, repair, or replacement. Bridge Rehabilitation and Strengthening: When modifying or upgrading existing bridges, the specifications guide engineers in designing interventions that bring the structure into compliance with current standards. Seismic Design: While sometimes detailed in companion guides (like the AASHTO Guide Specifications for LRFD Seismic Bridge Design), the core LRFD specifications integrate seismic loads and provide fundamental requirements for designing bridges to resist earthquake forces, particularly in designated seismic zones. Design for Other Loads: The specifications comprehensively address numerous other load types and effects critical to bridge performance, including wind loads, vehicular collision forces (on piers or rails), water and ice loads, temperature effects, creep, shrinkage, and settlement. The specifications are intended for public highway bridges on roads classified as "Highway Functional Classifications" Arterial, Collector, and Local. While they form the basis, specialized structures like movable bridges or bridges carrying exceptionally heavy loads might require additional or modified criteria. Distinguishing Characteristics of the AASHTO LRFD Specifications Several key characteristics define the AASHTO LRFD Specifications and contribute to their status as the modern standard: Reliability-Based Calibration: This is the cornerstone. The load and resistance factors are not arbitrary; they are statistically calibrated using probability theory and extensive databases of material tests, load measurements, and structural performance. This aims to achieve a consistent, quantifiable target level of safety (reliability index, β) across different components and limit states. A higher reliability index is targeted for failure modes with more severe consequences. Explicit Treatment of Multiple Limit States: Design isn't just about preventing collapse. LRFD requires checking several distinct Limit States, each representing a condition where the bridge ceases to perform its intended function: Strength Limit States: Prevent catastrophic failure (e.g., yielding, buckling, crushing, fracture). This is the primary state using the core φR ≥ γQ equation. Service Limit States: Ensure functionality and comfort under regular service loads (e.g., excessive deflection causing pavement damage, cracking in concrete impairing durability or appearance, vibration causing user discomfort). Extreme Event Limit States: Ensure survival and limited serviceability during rare, intense events like major earthquakes, significant vessel collisions, or design-level floods. Lower reliability indices are often accepted here due to the event's rarity. Fatigue and Fracture Limit State: Prevent failure due to repeated stress cycles over the bridge's lifespan, crucial for steel components. Integrated Load Combinations: The specifications provide explicit combinations of loads (e.g., dead load + live load + wind load; dead load + live load + earthquake load) with specific load factors for each combination. This recognizes that different loads acting together have different probabilities of occurrence and potential interactions. The most critical combination dictates the design. Material-Specific Provisions: While the core LRFD philosophy is universal, the specifications contain detailed chapters dedicated to the design of structures using specific materials (e.g., Concrete Structures, Steel Structures, Aluminum Structures, Wood Structures). These chapters provide material-specific equations, resistance factors, and detailing rules. Focus on System Behavior: While components are designed individually, the specifications increasingly emphasize understanding and accounting for system behavior, load paths, and redundancy. A redundant structure, where failure of one component doesn't lead to immediate collapse, is inherently safer. Evolution and Refinement: The LRFD specifications are not static. AASHTO updates them regularly (typically every 4-6 years) through a rigorous consensus process involving state DOTs, industry experts, researchers, and the FHWA. This incorporates the latest research findings (e.g., improved understanding of concrete behavior, refined seismic design approaches, new materials like HPS steel or UHPC), addresses lessons learned from bridge performance (including failures), and responds to evolving needs like accommodating heavier trucks or improving resilience to extreme events. Comprehensiveness: The document covers an immense scope, from fundamental design philosophy and load definitions to intricate details of component design, foundation analysis, seismic provisions, geometric requirements, and construction considerations. It strives to be a self-contained manual for highway bridge design. National Standardization: By providing a unified, scientifically grounded approach, the AASHTO LRFD Specifications ensure a consistent level of safety, performance, and design practice for highway bridges across all 50 states. This facilitates interstate commerce and simplifies the design review process.   The AASHTO LRFD Bridge Design Specifications represent the state-of-the-art in highway bridge engineering practice in the United States. Moving decisively beyond older deterministic methods, its core LRFD philosophy embraces probability and reliability theory to achieve a more rational, consistent, and quantifiable level of safety. Its comprehensive scope, covering everything from fundamental principles to intricate material-specific design rules for all major bridge components under a wide array of loads and limit states, makes it the indispensable reference for designing new highway bridges, evaluating existing ones, and planning rehabilitations. The specifications' defining characteristics – reliability-based calibration, explicit limit state checks, integrated load combinations, and a commitment to continuous evolution through research and practical experience – ensure that it remains a robust, living document, safeguarding the integrity and longevity of the nation's critical highway bridge infrastructure for decades to come. For any structural engineer engaged in U.S. highway bridge work, mastery of the AASHTO LRFD Specifications is not just beneficial; it is fundamental.

[Shanghai, China] – [July,7th,2025] – EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD. is proud to announce a significant milestone in its global expansion strategy with the successful award of the ANE Steel Bridge Project contract in Mozambique. This prestigious project signifies a major entry and commitment to the growing infrastructure market in Africa. The project involves the design, supply, and construction of 45 steel bridge structures with spans ranging from 30 to 60 meters each, culminating in a total combined bridge length of 1,950 meters. These bridges will play a crucial role in enhancing regional connectivity and transportation infrastructure within Mozambique. A key differentiator and testament to EVERCROSS BRIDGE TECHNOLOGY (SHANGHAI) CO., LTD.'s engineering excellence and commitment to international standards is that the bridge designs will fully comply with the rigorous AASHTO LRFD (Load and Resistance Factor Design) Bridge Design Specifications. This American Association of State Highway and Transportation Officials standard is recognized globally as a leading benchmark for modern, safe, and efficient bridge design, ensuring the structures meet the highest levels of safety, durability, and performance for Mozambique's needs.  

EVERCROSS Bridge Technology (Shanghai) Co., Ltd.  June 5, 2025 Recently, the  Bailey Bridge of the water supply pipeline project of Construction of Pipeline for Sigatoka Water Coverage Extension Projects of Fiji undertaken by our company (EVERCROSS Bridge Technology (Shanghai) Co., Ltd.) has successfully passed the final acceptance and has been well received by the construction unit and users. The project is 24 meters long and is designed and processed in accordance with AS/NZS standards. It is specially used for arranging pipelines and uses special pipe clamps. This marks another important milestone for our company in the Fiji market and has achieved decisive success, which has written a strong and colorful stroke for deepening regional cooperation in the South Pacific and enhancing the company's international brand influence.