Steel Truss Bridge: Modular Spans for Live-Traffic Crossings
A steel truss bridge built from factory modules: 20-80 m spans, 40 ft container logistics, and 7-15 day bolted erection that keeps live road, rail, and navigation traffic open.
Keeping Live Traffic Moving While the Crossing Is Rebuilt
A steel truss bridge project usually fails on one constraint the tender brief states clearly: existing road, rail, or navigation traffic cannot be closed for months. Cast-in-place concrete answers that constraint with temporary bridges, long detours, and extended possession windows. The modular steel girder and arch bridge platform answers it differently: complete spans are fabricated off-site, shipped in standard containers, and erected over live crossings in 7-15 days.
Factory Modules, Container Logistics
Every module is fabricated to 12 m by 3.2 m dimensions that fit inside a standard 40 ft container, so no oversized transport permits are needed. Modules arrive as high-strength bolted assemblies; field crews join them with calibrated wrenches instead of site welding, which keeps fatigue-critical connections under factory inspection. Bridge-grade Q345qC steel is used for girders, and a complete NDT dossier ships with the package for the acceptance authority.
Span and Erection Planning
| Parameter | Range |
|---|---|
| Clear span | 20-80 m, girder, truss, box, or arch layouts |
| Module size | 12 m x 3.2 m, 40 ft container compatible |
| Erection window | 7-15 days with live crossing maintained |
| Bridge steel | Q345qC bridge-grade steel |
| Documentation | Full NDT dossier with delivery |
The splice detail above is where erection speed comes from: every field joint is a designed bolt pattern, not a site improvisation. For transport and industrial infrastructure buyers, our export delivery workflow covers container packing plans and port documentation, and the project cases library shows completed crossings. All erection method, possession window, and load-rating details are confirmed per project with the local design authority.
Configure your requirement
This selector applies the same specification rules our engineers use when pricing a project. It gives you a starting configuration to confirm with us - final values are confirmed per project.
Multi-module span
40-60 m spans join several modules with calibrated high-strength bolts; erection stays inside the 7-15 day window with live traffic maintained.
Over navigation water, modules are lifted without temporary mid-channel supports so the channel stays open.
Product platforms behind this solution
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The form below is pre-linked to this solution page, so our engineers see which configuration you are asking about. Share spans, loads, or site details to help us prepare a quotation.