ASTM A588 Corten Steel Modular Truss Bridge – Prefabricated Overpass Structure

• Truss is divided into transportable modules sized for standard container or flat-rack loading
• Modules are interchangeable and repeatable, allowing phased construction and future extension
• Bolted splice joints with match-drilled holes guarantee field fit without reaming
• Site works limited to foundation or pier construction, lifting and bolting
• Modules can be dismantled and relocated for temporary or relocatable overpass use

• Road overpass, pedestrian overpass, conveyor or pipeline crossing
• Support options: steel portal towers, concrete piers or abutments to client design
• Vertical clearance and approach ramp coordination handled during detailing
• Stairs, ramps, lifts or escalator interfaces coordinated for pedestrian schemes

• In-house calculation, detailing and 3D modelling from drawings or performance specification
• Truss form adapted to the project: Pratt, Warren, modified Warren or custom geometry
• Fatigue, deflection, camber and dynamic response checks for the specified traffic class
• Connection design with bolt group and plate checks, shop drawings issued for approval
• Third-party design review and international code compliance available on request

• CNC cutting, automatic submerged-arc welding, straightening and shot blasting to Sa2.5
• Dimensional checks at cutting, assembly, welding and finishing stages
• Weld inspection by UT and MT, heat numbers traceable to mill certificates
• Complete inspection report, NDT records and as-built drawings supplied with the goods

1. Shop trial assembly of the full truss or matched module groups on level beds
2. Verification of camber, overall geometry, splice fit and bolt-hole alignment
3. Matched marking of each member with the erection sequence
4. Disassembly, protection of machined and contact surfaces, sequence-based packing
5. Erection manual supplied, remote video support available during installation

• Uncoated weathering steel with natural patina, lowest lifecycle cost in most atmospheres
• Hot-dip galvanizing to ASTM A123 / ISO 1461 for coastal or aggressive environments
• Paint systems to ISO 12944 C3–C5 in two or three coats
• Anti-slip deck finishes: open grating, checker plate or sprayed aggregate

• Steel plate deck, reinforced concrete deck, timber deck or open grating
• Guardrails, parapets, handrails, kerbs and anti-throw screens
• Expansion joints, drainage, bearing assemblies and lighting or signage brackets
• Approach transition details coordinated with the client road or walkway design

Road and highway overpasses, pedestrian and cycle overpasses, rail and metro crossings, industrial plant and conveyor crossings, port and logistics park crossings, temporary and emergency overpasses, and urban landscape structures.

• Modules bundled and steel-frame crated, connections tagged by assembly sequence
• Container or break-bulk loading plan prepared for the most economical freight
• Production lead time generally 30–45 days after drawing approval
• FOB, CIF, CFR and DAP terms available, export documentation handled in-house

• Mill test certificates, WPS and welder qualification records, inspection and trial assembly reports, NDT records, packing list and erection drawings
• Installation supervision or on-site technical guidance available on request
• Spare bolts, bearings and wearing parts shipped with the goods
• Structural warranty per contract terms, technical response within 24 hours