Weather-Resistant AASHTO LRFD Steel Arch Bridge for General Highway & Crossing Infrastructure
Price:
USD 1,000-1,500/MT
MOQ:
100 MT
Delivery Time:
30-60 Days
Brand:
FASEC
Product Description
This shop-fabricated Weather-Resistant AASHTO LRFD Steel Arch Bridge suits highway crossings demanding long service life and low upkeep. Built from ASTM A709 Grade 50W weathering steel, it creates a natural protective patina under atmospheric exposure without repeated painting. Designed to AASHTO LRFD and fabricated following AWS D1.5M, the closed-box arch system offers reliable spanning performance. Modular bolted assembly minimizes site work and satisfies North American engineering requirements.
Weathering Steel Advantages
• Forms dense self-protecting patina to resist corrosion- • Eliminates initial painting and periodic repainting, lowering lifecycle costs
- • Eco-friendly with no VOC emissions from coatings
- • Distinct natural brown appearance that harmonizes with surroundings
- • Proven 50+ years of successful global bridge applications
AASHTO LRFD Compliance
• Adopts LRFD design philosophy; all critical limit states verified- • Supports HL-93 highway live load
- • Steel design follows AASHTO LRFD Section 6
- • Material conforms to AASHTO M270
- • Compliant with AASHTO seismic requirements
- • 75 – 100+ years design life
AWS D1.5M Welding Standards
• Welding specifications optimized for weathering steel- • 100% UT inspection on all fracture-critical load-bearing welds
- • Work completed by AWS-certified welders under CWI supervision
- • Supplementary MT/PT testing implemented as required
Specifications
| Parameter | Details |
|---|---|
| Material Standard | ASTM A709 / AASHTO M270 |
| Steel Grade | Grade 50W (HPS 50W / HPS 70W optional) |
| Corrosion Index | ASTM G101 ≥ 6.0 |
| Yield Strength | ≥345 MPa (50 ksi) |
| Design Standard | AASHTO LRFD |
| Welding Code | AWS D1.5M |
| Arch Form | Closed-box ribs with internal stiffeners |
| Live Load | HL-93 |
| Field Connection | High-strength bolted, no field welding |
| Anti-Corrosion System | Unpainted self-patina weathering steel |
| Design Life | 75 – 100+ years |
Closed-Box Arch Advantages
• High torsional rigidity, fit for skewed crossings and eccentric loads- • Strong buckling resistance for medium & long-span projects
- • Favorable strength-to-weight ratio
- • Internal stiffeners prevent local buckling
- • Enclosed structure reduces moisture accumulation and maintenance
Prefabrication & Installation
• Complete shop fabrication under controlled conditions- • Factory preassembly to guarantee accurate fitting
- • Bolted connections avoid weather-related construction delays
- • Modular segments shorten on-site erection duration
- • Parallel fabrication and foundation construction to save project time
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Quality Assurance
• Full MTRs supplied for ASTM A709 raw materials- • Qualified WPS/PQR and certified welding operators
- • Systematic UT, MT & PT non-destructive testing
- • Full one-side preassembly inspection
- • Third-party inspection (SGS/Bureau Veritas) available
- • Complete package of technical documents for project acceptance
Conclusion – Weather-Resistant, AASHTO Certified, Built to Last
Made of ASTM A709 Grade 50W weathering steel, this arch bridge provides natural anti-corrosion performance without paint maintenance. Fully compliant with AASHTO LRFD and AWS D1.5M, the closed-box arch delivers stable load capacity and fast modular installation. It is an economical long-term solution for general highway and crossing infrastructure across North America.
Share your span, width and site conditions. We will offer AASHTO-compliant design and formal quotation within 48 hours.
Weather-resistant, engineered to last – your reliable crossing solution.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hangzhou FAMOUS Steel Engineering Company
Location
Huafeng Road 2#, Gongsu District, Hangzhou City, Zhejiang China
Contact Person
Tomy.Gao