Highway Steel Arch Bridge Fabrication Compliant with AASHTO LRFD and AWS D1.5

The Highway Steel Arch Bridge Fabrication service covers the complete steel superstructure for road and highway arch bridges — engineered for traffic loads, multi-lane decks and highway-wide clearances. Every component is fabricated to AASHTO LRFD specifications and welded in accordance with the AASHTO/AWS D1.5 Bridge Welding Code.

Whether you need a thrust arch or a tied arch, a single-span or multi-span crossing over rivers, valleys or highways, we fabricate to your design drawings, with material and welding documentation prepared for your project file.

What We Fabricate

Highway Deck Solutions

• Multi-lane width: Girders and deck fabricated to your roadway width and lane configuration.

• Wearing surface: Orthotropic steel deck prepared for asphalt or concrete wearing surface.

• Railings & barriers: Provision for highway guardrails and safety barriers at deck edges.

• Expansion joints: Deck joints and bearing details designed for movement under highway loads.

• Staged erection: Segmental arch ribs and girders fabricated for site hoisting — ideal for rivers and deep valleys where full falsework is impractical.

Standards & Certification

• AASHTO LRFD — Load and Resistance Factor Design; design and fabrication basis for all bridge components

• AASHTO/AWS D1.5 — Bridge Welding Code; covers all welding, WPS/PQR, welder qualification and inspection

• ASTM A709 — Structural steel for bridges; flanges, webs and stiffeners in Grade 50 / 50W / HPS 70W as specified

• AISC IBR / ABR — Certified Bridge Fabricator; factory certification for major and advanced bridge work

• AWS CWI — Certified Welding Inspector; welding inspection coverage

• AISC FCE — Fracture Control Endorsement; for fracture-critical members (on request)

Material Options

• Arch Ribs & Box Girders: ASTM A709 Gr. 50 / 50W — Grade 50W for weathering steel applications

• Highway Decking: ASTM A709 Gr. 50 stiffened plate for orthotropic decks

• Stiffeners & Connections: ASTM A709 grades as specified in shop drawings

• Weathering Finish: Self-protecting Corten-style steel for exposed structures

Fabrication & Quality Control

Every highway arch bridge project follows a documented fabrication sequence:

1. Shop Drawing Preparation — Detailed drawings for components, camber, sweep and splices.

2. Material Procurement — ASTM A709 steel with Mill Test Reports.

3. Cutting, Forming & Fit-Up — To AASHTO LRFD fabrication tolerances.

4. Welding & Inspection — Per D1.5 qualified WPS/PQR, certified welders; AWS CWI inspection with NDT as specified.

5. Surface Treatment — Shot blasting, priming, painting or weathering finish.

Documentation Package

Each shipment includes: Mill Test Reports, WPS/PQR, welder certificates, weld maps, NDT reports, dimensional inspection records, as-built shop drawings and packing list — ready for your project file.

Why Choose FASECbuilding?

At Hangzhou FAMOUS Steel Engineering Co., Ltd. (FASECbuilding), we bring over 20 years of experience in steel bridges and steel structures and exports to more than 100 countries and regions, specialising in steel bridges, factory buildings, trusses, composite floor decking and custom steel components. When you work with us, you get:

• AASHTO LRFD & AWS D1.5 compliant fabrication — documented and traceable

• AISC IBR/ABR certified factory for bridge fabrication

• AWS CWI inspection on all welding

• OEM/ODM — built to your drawings, not from a catalog

• Segmental fabrication for staged site erection

• Export packing and worldwide shipping with full logistics support

Send us your drawings and required standard today for a free quotation and technical proposal — Hangzhou FAMOUS Steel Engineering Co., Ltd. (FASECbuilding) is ready to build your highway steel arch bridge the right way.