Prefabricated AASHTO LRFD Steel Arch Bridge for Highway and River Crossing Projects
Price:
USD 1,000-1,500/MT
MOQ:
100 MT
Delivery Time:
30-60 Days
Brand:
FASEC
Product Description
The Prefabricated AASHTO LRFD Steel Arch Bridge is a high-performance, shop-fabricated structural system designed for highway and river crossing projects that demand long clear spans and fast on-site installation. The steel arch structure possesses excellent compressive performance and material efficiency, which is a cost-effective choice for projects where conventional girder bridges cannot meet span demands. Fabrication and design comply with AASHTO LRFD, and all welding work follows AWS D1.5M specifications. The whole bridge is divided into modular segments manufactured in factory, equipped with bolted field connections. This production mode greatly accelerates assembly progress, cuts on-site construction disturbance to traffic, and fully meets North American engineering compliance requirements.
AASHTO LRFD – The U.S. Highway Standard
Design adopts Load and Resistance Factor Design method, and all structural limit states are fully verified. The design live load adopts HL-93 standard including design truck load and lane load, which is the basic load requirement specified by AASHTO. Steel member design implements rules of AASHTO LRFD Section 6, covering flexure, shear force, combined load effect and fatigue performance check. Corresponding seismic design clauses from AASHTO LRFD are applied for seismic risk assessment. Engineers complete multiple load combination calculations covering strength limit state, service limit state, fatigue limit state and extreme event limit state to guarantee long-term structural safety.
Arch Configurations – Three Options
| Arch Type | Description | Best For |
|---|---|---|
| Through Arch | Arch rises above deck; deck passes through | Limited vertical clearance; signature aesthetics |
| Tied Arch | Arch ribs connected by tension tie at deck level | Poor soil conditions – no horizontal thrust on abutments |
| Deck Arch | Arch sits below deck; deck passes over top | Deep valleys or high-clearance river crossings |
Key Specifications
| Parameter | Details |
|---|---|
| Design Standard | AASHTO LRFD Bridge Design Specifications |
| Welding Code | AWS D1.5M Bridge Welding Code |
| Arch Type | Tied / Through / Deck arch – site-selected |
| Arch Section | Closed-box with internal stiffeners |
| Steel Grade | ASTM A709 Grade 50 (equivalent Q355B) |
| Live Load | HL-93 (design truck + lane load) |
| Span Range | Custom-engineered to project requirements |
| Connection | High-strength bolted – no field welding |
| Corrosion Protection | Epoxy paint / Hot-dip galvanizing / Weathering steel |
| Design Life | 75 – 100+ years |
| Certifications | AASHTO LRFD compliant, AWS D1.5M certified, ISO 9001 |
Prefabrication & Assembly
All structural components are completely manufactured inside the factory under stable production environments. Complete pre-assembly inspection will be conducted before delivery to verify assembly accuracy and avoid on-site modification work. The whole arch is split into independent modular segments, convenient for sea container or flatbed transportation and controlling logistics expenses. All joints adopt high-strength bolted connection schemes, eliminating field welding work and removing construction restrictions caused by bad weather. Project owners can carry out foundation construction simultaneously with bridge fabrication, realizing parallel operation. The overall on-site installation cycle can be shortened significantly to reduce traffic interruption time.
Quality Assurance
• Raw steel material is ASTM A709 Grade 50 certified, and complete Mill Test Reports (MTRs) will be supplied. All welders hold AWS qualification certificates, and welding follows fully qualified WPS/PQR in accordance with AWS D1.5M.- • Critical load-bearing welding seams receive 100% ultrasonic testing (UT), and MT or PT inspection will be arranged for related areas as required. Camber value is preset during production to counteract deflection induced by dead load. Surface treatment includes surface blasting and multi-layer epoxy coating or hot-dip galvanizing. We accept third-party inspection witnessed by SGS, Bureau Veritas or other organizations appointed by clients. A full set of technical documents including design calculation reports, material certificates, WPS/PQR, NDT records and as-built drawings will be sorted and delivered.
Conclusion – AASHTO Certified, Arch Strong
The Prefabricated AASHTO LRFD Steel Arch Bridge delivers proven structural performance, long-span capacity and rapid construction, designed in accordance with AASHTO LRFD and fabricated under AWS D1.5M. Suitable for river crossings, highway overpasses and transport infrastructure, this arch bridge features outstanding durability and less site disruption, fully complying with North American engineering requirements.
All modules are well protected for shipment with complete export documents available. We offer professional on-site assembly guidance, full technical files and reliable after-sales support.
Hangzhou FAMOUS Steel Engineering Co., Ltd. has over 20 years of experience manufacturing custom steel bridge components. Our certified factory meets international standards and serves global infrastructure projects worldwide.
Send your project parameters including span, width and clearance. We offer AASHTO-compliant design, arch selection and formal quotation within 48 hours. Engineered to standard, built to last.
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Company
Hangzhou FAMOUS Steel Engineering Company
Location
Huafeng Road 2#, Gongsu District, Hangzhou City, Zhejiang China
Contact Person
Tomy.Gao