Long Span Prefabricated Corten Steel Truss Bridge for Vehicle & Traffic Crossings

This is not a scaled-up standard bridge. For long-span vehicle crossings, the governing risks are wind-induced vibration, differential camber, splice tolerance stack-up, and corrosion at inaccessible details.

Our approach resolves all four at the design stage: the truss is optimized as a stiffened through-truss with pre-cambered chords, the Corten surface is detailed to drain and breathe, and the splice system follows a zero-tolerance philosophy—so a long span fits together on site exactly as it did in the workshop.

Design Philosophy & Engineering Focus

• Wind-First Engineering: Vortex shedding, flutter, and buffeting checked for the site terrain category.

• Zero-Tolerance Splices: Match-drilled joints proven in trial assembly, eliminating field reaming.

• Corrosion-by-Design: Drip edges, vented connections, and no moisture traps in the detailing.

• Pre-camber Control: Set to dead load plus defined live-load share, verified in the shop.

• Erection-Stage Analysis: Lifting, temporary support, and launching stresses checked separately.

• Lifecycle Mindset: Bolted, dismantlable structure that can be relocated or reused.

• Seismic & Thermal: Bearing and restraint design (including unseating prevention for high-seismicity zones) and expansion joint sizing for the actual site temperature range.

• Fatigue Assessment: Fatigue category evaluation at splice plates and gussets for projected traffic volume and axle spectrum.

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Innovation Highlights

• Accelerated Bridge Construction (ABC): Modules arrive pre-assembled in transportable pairs; a single lifting campaign sets the whole span and cuts on-site occupation to 2-3 days.

• Launching-Ready Configuration: For sites without crane access, the truss can be pushed across the gap over temporary rollers with a launching nose, avoiding staged river or traffic closures.

• Structural Health Monitoring: Optional strain, vibration, and tilt sensors with a web dashboard provide load history and condition data.

• BIM-Ready Deliverables: IFC model with member IDs matched to shipping marks and QR codes on components (scan for position, bolt list, and torque value).

• Low-Carbon Option: EPD-aligned mill sourcing, high-strength grade substitution, and section optimization to reduce steel weight per square meter of deck.

• Aesthetic Variants: Curved chord profiles, perforated/louvred parapets, and arch/cable accents for urban corridors.

Configuration Range

Material & Protection

• Base Material: ASTM A588 weathering steel as standard. A709 Gr.50 or Q370qE available for heavy-haul and cold-climate service.

• Connections: Friction-grip bolted connections to ASTM A325 / A490. Galvanized or stainless steel used in splash and de-icing zones.

• Coating Alternatives: ISO 12944 C3–C5 systems where bare weathering steel is unsuitable (e.g., marine, de-icing salt, or industrial fallout).

• Execution Standards: AASHTO LRFD, AWS D1.5, and EN 1090 up to EXC3.

🔬 Quality Assurance & Trial Assembly

• Welding & NDT: Weld procedures qualified to AWS D1.5 or EN 1090. UT and MT on all full-penetration and fatigue-critical welds.

• Dimensional Control: Total station used at assembly; camber measured against the theoretical profile.

• Full Trial Assembly: Complete span or matched segment groups are trial-assembled, with joints match-drilled and marked.

• Inspection Dossier: Supplied with mill certificates, WPS/PQR, NDT reports, dimensional records, and trial assembly report.

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Logistics, Site Support & Commercial Terms

• Shipping: Optimized for 40ft containers or break-bulk, with a lifting and rigging plan per module.

• Site Support: Erection manual, torque schedule, and QR-linked component index issued before delivery. Remote technical support during erection; optional site supervisor deployment.

• Lead Time: Typically 35–50 days after drawing approval (dependent on span and finish).

• Trade & Payment: FOB, CIF, CFR, and DAP terms. T/T or L/C at sight.

• Spare Parts: Spare bolts, bearings, and joint seals supplied with the shipment. Technical response within 24 hours.

About Our Company

Hangzhou FAMOUS Steel Engineering Co., Ltd. is an integrated structural steel manufacturer and global exporter based in Hangzhou, Zhejiang, China.

We provide one-stop services from design and detailing to fabrication, surface treatment, and export delivery. Certified to ISO 9001 and CE (EN 1090), our in-house capabilities ensure that every long-span bridge meets the most rigorous international engineering standards, keeping your project under one roof from drawing to shipment.

🌐 Websites: www.famoussteel.com | www.steelfabricat.com | www.structural-steelbuilding.com

📩 Contact Us

Send us your span, deck width, design load, site conditions, and any reference drawings. Our engineering team will return a preliminary design, 3D sketch, and quotation within 5 working days.

Contact us today for a tailored, cost-effective prefabricated steel solution.