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Compact 321
BAILEY
The 48m 321 Bailey Bridge is a modular steel truss structure designed for semi-permanent highway crossings. This system follows ASTM and GB standards, providing a solution for locations requiring long-span crossings without intermediate support structures. The bridge serves as a traffic link for areas with challenging terrain conditions, including mountainous regions and river valleys.
Parameter | Value |
Product Name | Bailey Steel Bridge |
Model Number | JSBLGQ-ZB200(321) |
Standard | ASTM, GB |
Material Grade | Q355B-Q460C |
Tolerance | ±1% |
Total Length | 48 meters (157.5 feet) |
Configuration | Triple-Row, Double-Layer, Reinforced (TDR) |
Carriageway Width | 4 meters |
Production Capacity | 2500 tons per month |
Packing Detail | Cargo in bundle |
Payment Mode | Telegraphic Transfer (TT) |
Port of Loading | Any port in China, usually Shanghai Port |
The bridge utilizes a Triple-Row, Double-Layer, Reinforced (TDR) configuration, which is a high-strength assembly for the Type 321 system. This design incorporates three lines of trusses on each side, stacked two layers high, to provide bending and shear resistance required for long-span applications.
The TDR design enables the structure to span a 48-meter gap in a single stretch. This single-span approach eliminates the need for intermediate pier construction, which reduces project complexity and costs in river valley and mountainous terrains.
This heavy-duty structure is rated for China Highway Class-II loads, allowing it to accommodate standard highway vehicles as a semi-permanent traffic link. The design meets established safety requirements for highway infrastructure projects.
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A 48m prefabricated bridge was installed in Tekes County, Ili Prefecture, Xinjiang, China. The site is located in a mountainous region with river valley terrain, requiring a robust single-span crossing to support highway traffic. The project objective was to establish a vital traffic connection without constructing intermediate piers in the river.
The completed bridge provides a 4-meter-wide single-lane carriageway. All steel components are protected with an anticorrosive paint finish to withstand the region's temperature extremes and arid conditions. This project demonstrates the Type 321 system's capacity to address long-span, heavy-load challenges in remote environments.
With the Triple-Row, Double-Layer, Reinforced (TDR) configuration, the 321 Bailey Bridge system can achieve a maximum single span of 48 meters.
The 48m 321 Bailey Bridge meets China Highway Class-II load standards, suitable for standard highway vehicle traffic.
The bridge is constructed from Q355B-Q460C grade steel, with all components finished with anticorrosive paint for durability.
The production capacity for Bailey steel bridges is 2500 tons per month, allowing for timely delivery of large-scale projects.
Orders are processed with a production capacity of 2500 tons per month. Products are packed in bundles for shipping. Payment is accepted via Telegraphic Transfer (TT). Loading can be arranged at any port in China, with Shanghai Port being the most commonly used. For inquiries about custom configurations or project-specific requirements, contact our technical team for detailed information.
