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Type 321- 900 Support Frame For Cast-In-Place Bridge Bailey Support
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Prefabricated steel highway bridges are a type of modular bridge that can be quickly erected and are primarily used for emergency repairs.  These bridge components have the following characteristics:
1. They are made of high-strength steel and are fully welded. The main beams are generally detachable lightweight trusses, assembled in three-dimensional or planar units, connected by single pins or bolts. They are lightweight, making transportation and disassembly convenient.
2. The components are interchangeable and can be reused multiple times.
3. The combination of the bridge's main beams can be adjusted according to the span and load capacity.

Since World War II, several major countries have standardized and produced their own bridge repair equipment. For example, the former Soviet Union's "PMM" had an upper-supported, triangular truss main beam with three-dimensional assembly units. Japan's "Type 99" military bridge also used a triangular truss main beam with three-dimensional assembly units, primarily for railway bridge repair. This equipment can still be seen in my country's railway departments and some highway construction units, where it is often used as construction equipment. As early as the beginning of World War II, in 1938, Britain and the United States adopted the "Bailey bridge," a steel truss bridge designed by British engineer Donald Bailey, as a military bridge for the Allied forces. This bridge was widely used in Europe and the Far East during World War II, and was further improved and developed after the war.

My country's prefabricated highway steel bridges were standardized and put into production in the 1960s, originally called the "321" highway steel bridge. The state arranged for three designated factories to produce them, with an annual output of approximately 1500-2000 tons, stored throughout the country. This equipment played an important role in disaster relief (such as the Tangshan earthquake) and border self-defense counterattacks. In 1992, during peacekeeping operations in Cambodia, Chinese engineering troops used domestically produced "321" highway steel bridge components on Highway 6, repairing bridges at a rate of one bridge every two days, completing the erection of six highway bridges on a 217 km road section within 15 days, receiving high praise from the United Nations peacekeeping forces. The "321" highway steel bridge produced in my country is similar to the British "Bailey bridge," with the main beams also being lattice trusses, but the dimensions are different. The Bailey bridge uses imperial units, while the "321" highway steel bridge uses metric units, and these two types of equipment cannot be mixed. Workers on some construction sites in my country often refer to the domestically produced "321" highway steel bridge trusses as "Bailey trusses."

Bailey bridge components in my country have undergone continuous updates and evolution to adapt to the needs of more applications. The gradually emerging HD200 type Bailey bridge further improves the bending and shear resistance of the steel bridge, developing towards larger spans and heavier loads. In the housing sector, it can be combined into an aerial frame structure, serving as a construction platform, and gradually climbing upwards through the coordination of hydraulic jacking structures. As a cast-in-place support structure, the Bailey bridge components are modified into an upper-bearing structure, supplemented with beams, supports, and other materials, which can be used for formwork and concrete pouring.

ABOUT JINHAO
Zhenjiang Jinhao Road & Bridge Supporting Engineering Co., Ltd.
Zhenjiang Jinhao Road & Bridge Supporting Engineering Co., Ltd.
Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. is located in the industrial park of Shangdang Town, Dantu District, Zhenjiang City, near the Beijing Hangzhou Grand Canal and Yangli Expressway, only 15 minutes drive from Zhenjiang High-speed Railway South Station, with convenient geographical transportation location.
As a professional China Bailey Bridge Panel Manufacturers and Bailey Bridge Suppliers, the company was established in 2017 . In the early stage, it was engaged in the professional marketing of construction materials, industrial materials and various metal processing materials. With the expansion of its business scope, our company has transformed into the design, manufacturing, erection, leasing and other comprehensive businesses of Bailey bridge, hanging basket, and pier body formwork. Now, the main products are Bailey steel bridge, 321 types, HD200 type, triangle hanging basket, diamond hanging basket, and various steel templates.
Bailey steel temporary bridge is widely used in national defense combat readiness, traffic engineering, municipal engineering, water conservancy engineering and railway engineering. It is a fabricated bridge widely used in the world. It has the characteristics of simple structure, convenient erection, high standardization, strong interchangeability, various structural forms, large bearing capacity, good applicability, etc. It can be combined into temporary bridges, emergency bridges and semi-permanent bridges of various types and purposes according to different spans. It can also use trusses to conveniently form engineering structures and road and bridge equipment such as guide beams, arches, tower columns, gantry hangers, bridge erection machines, building climbing formwork, etc.
We have a good product quality, professional sales and technical management team. If you need our products, we look forward to your online message or call for advice. We warmly welcome the investigation and guidance.
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Bailey Bridge Applications in Civil Engineering and Transportation

Bailey Bridge systems are widely applied in modern road infrastructure development due to our modular design, rapid installation capability, and adaptability to diverse terrain conditions. In highway construction and maintenance, Bailey Bridge solutions are frequently used as temporary detour bridges, enabling continuous traffic flow during major upgrades, repairs, or emergency replacements. This approach minimizes congestion and ensures that transportation networks remain functional even during complex engineering operations. The flexibility of Bailey Bridge structures allows for quick assembly using standardized panels, reducing reliance on heavy machinery and extensive labor. In rural, mountainous, or geographically constrained areas, Bailey Bridge systems often serve as semi-permanent or permanent solutions where conventional bridge construction is impractical due to cost or environmental limitations. By using prefabricated steel components, engineers can construct durable crossings over rivers, valleys, and uneven landscapes with reduced project timelines. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. contributes significantly to this sector by providing 321-type and HD200-type Bailey Bridge products designed to meet varying load capacities and span requirements. Our integrated services, including design, manufacturing, and on-site erection, ensure that each Bailey Bridge project aligns with specific engineering demands. Bailey Bridge systems support the development of rural transportation networks by improving accessibility for local communities, facilitating the movement of goods, and enhancing regional economic activity. Our reusable components further reduce long-term costs, making Bailey Bridge technology a practical option for governments and contractors working within limited budgets. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. enhances these applications through advanced manufacturing techniques and a strong logistics network, ensuring timely delivery and efficient installation of Bailey Bridge structures across various road infrastructure projects.

Parameter Category Specification Item Typical Value / Range Description
Structural Type Bridge Configuration Single / Double / Triple Truss Modular Bailey Bridge configurations adapted to load and span requirements
Span Capacity Standard Span Length 9m – 60m Adjustable span using prefabricated panels and reinforcement
Load Capacity Design Load 10T – 80T+ Suitable for pedestrian, vehicle, and heavy equipment transport
Deck Width ճանապարհ Width 3.7m – 7.5m Configurable width for single-lane or multi-lane traffic
Material Main Structure Steel High-strength alloy steel Ensures durability, corrosion resistance, and long service life


Bailey Bridge systems play a significant role in municipal engineering projects where space constraints, time sensitivity, and functional diversity are key considerations. In urban environments, Bailey Bridge structures are used for pedestrian walkways, temporary road crossings, drainage channel bridges, and utility access routes. The modular nature of Bailey Bridge components allows for flexible configurations that can be adapted to complex city layouts, ensuring compatibility with existing infrastructure. Municipal projects often require rapid construction to minimize disruption to daily urban activities. Bailey Bridge systems can be preassembled and installed quickly, reducing road closures and maintaining traffic efficiency. This capability is particularly valuable in densely populated areas where prolonged construction can impact businesses and public services. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. supports municipal engineering by offering customized Bailey Bridge solutions that integrate seamlessly with urban environments. Our expertise in steel templates and formwork systems further enhances our ability to address diverse construction needs within city infrastructure projects. Bailey Bridge systems are also used in urban flood control and drainage projects, providing temporary or permanent crossings over canals and waterways. Our durability and resistance to environmental factors make Bailey Bridge structures suitable for long-term municipal use. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. combines product quality with technical expertise to deliver reliable solutions that meet the specific requirements of municipal authorities. By incorporating auxiliary equipment such as hanging baskets and gantry systems, we expand the functionality of Bailey Bridge applications in urban engineering, enabling efficient construction and maintenance operations.


Bailey Bridge systems are increasingly utilized in railway engineering due to our ability to support heavy loads and adapt to complex construction environments. During railway bridge replacement or maintenance projects, Bailey Bridge structures are often installed as temporary crossings, ensuring uninterrupted rail operations. This approach reduces downtime and maintains the continuity of transportation networks, which is essential for both passenger and freight services. Railway engineering requires strict adherence to safety standards and precise structural alignment. Bailey Bridge systems meet these requirements through standardized components and robust design principles. The modular configuration allows engineers to adjust span lengths and load capacities according to project specifications, ensuring reliable performance under dynamic conditions. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. provides high-quality Bailey Bridge products designed to meet the demanding requirements of railway infrastructure projects. Our manufacturing processes ensure consistency and structural integrity, supporting safe and efficient railway operations. In addition to temporary bridge installations, Bailey Bridge systems are used as auxiliary structures in railway construction, including support frameworks, access platforms, and material transport routes. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. enhances these applications by offering complementary equipment such as guide beams and steel formwork systems, enabling comprehensive solutions for railway engineering. Our ability to deliver integrated services ensures that Bailey Bridge systems can be effectively utilized in both construction and maintenance phases of railway projects, improving overall efficiency and project outcomes.


Bailey Bridge systems are widely used in water conservancy and hydraulic engineering projects, where reliable access across rivers, canals, and reservoirs is required for construction and maintenance activities. Our modular design allows for rapid deployment in environments where traditional bridge construction may be challenging due to water flow, soil conditions, or accessibility constraints. Bailey Bridge structures provide stable and durable crossings that support the transportation of materials, equipment, and personnel. In irrigation and flood control projects, Bailey Bridge systems facilitate the construction of dams, levees, and drainage systems by providing temporary or permanent access routes. Our adaptability enables engineers to design bridge configurations that accommodate varying water levels and environmental conditions. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. contributes to this sector by manufacturing Bailey Bridge products with enhanced corrosion resistance and structural durability, ensuring reliable performance in water-intensive environments. Bailey Bridge systems are also valuable in post-disaster recovery efforts, where rapid restoration of transportation networks is required following floods or other natural events. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. supports these efforts by providing efficient and dependable Bailey Bridge solutions that can be deployed quickly to reconnect affected areas. Our expertise in steel templates and auxiliary equipment further enhances our ability to support complex hydraulic engineering projects, ensuring that Bailey Bridge systems remain a practical and effective solution in water conservancy applications.


Bailey Bridge systems are extensively used in large-scale infrastructure projects, including highways, industrial developments, and major construction initiatives. Our ability to provide temporary bridging solutions during construction phases allows contractors to maintain site accessibility and operational efficiency. Bailey Bridge structures can be installed quickly and adjusted as project requirements evolve, making our a flexible option for complex engineering environments. In large infrastructure projects, Bailey Bridge systems are often used to support the transportation of heavy equipment and materials across construction sites. Our high load-bearing capacity and structural stability ensure safe and reliable operation under demanding conditions. Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. offers customized Bailey Bridge solutions designed to meet the specific requirements of large-scale projects, including varying span lengths and load capacities. Beyond bridge structures, Zhenjiang Jinhao Road and Bridge Supporting Engineering Co., Ltd. provides a range of auxiliary equipment, such as triangle and diamond hanging baskets, which are essential for high-altitude construction and complex engineering tasks. By integrating Bailey Bridge systems with these additional components, we create comprehensive solutions that enhance construction efficiency and reduce project timelines. Our ability to deliver end-to-end services ensures that Bailey Bridge applications can be effectively implemented in large-scale infrastructure projects, supporting the development of modern transportation networks.

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