Shop Welded AASHTO LRFD Steel Arch Bridge for Permanent Road Construction Works
Price:
USD 1,000-1,500/MT
MOQ:
100 MT
Delivery Time:
30-60 Days
Brand:
FASEC
Product Description
The Shop Welded AASHTO LRFD Steel Arch Bridge is a full factory-fabricated permanent bridge system designed for long-term road and highway infrastructure. Different from conventional on-site welded bridges, this model adopts 100% shop welding under stable factory conditions to ensure consistent weld quality and structural stability.
Fully designed per AASHTO LRFD and fabricated under AWS D1.5M, the bridge applies standard LRFD load-resistance design methodology to meet US highway safety requirements. The closed-box steel arch structure delivers high spanning capability and structural efficiency, ideal for permanent highway overpasses, ramp interchanges and major road crossings.
Shop Welding Core Advantages
Controlled Factory Welding: Climate-stable workshop environment avoids wind, moisture and temperature interference of field welding.- Higher Weld Consistency: Adopts automated SAW/GMAW welding for full penetration, uniform fusion and fewer defects.
- 100% Full NDT Inspection: All primary load-carrying welds complete 100% UT ultrasonic testing in factory.
- No Field Welding Risk: On-site assembly uses high-strength bolted connections to eliminate on-site welding errors and rework.
- Schedule Stability: Fabrication is weather-independent, ensuring on-time project delivery.
- Fast On-Site Erection: Pre-welded modular design greatly shortens construction period and reduces road closure time.
AASHTO LRFD Compliance (US Highway Standard)
Design Method: Official LRFD load & resistance factor design- Design Live Load: Standard HL-93 truck + lane load
- Steel Structure Design: Fully compliant with AASHTO LRFD Section 6 (flexure, shear, fatigue, fracture control)
- Fatigue Performance: Classified per AASHTO 6.6.1.2 fatigue category standards
- Seismic Design: Compliant with AASHTO LRFD seismic provisions
- Design Lifespan: 75–100+ years service life
AWS D1.5M Welding Certification
Top-tier bridge welding standard (stricter than general AWS D1.1)- FCM fracture-critical member specification & enhanced inspection
- 100% UT testing for full-penetration critical welds
- AWS-certified welders + CWI certified inspectors for full-process supervision
- Standard UT/MT/PT multi-level NDT quality control
Key Specifications
| Parameter | Details |
|---|---|
| Design Standard | AASHTO LRFD Bridge Design Specifications (latest edition) – Load and Resistance Factor Design methodology |
| Welding Code | AWS D1.5M Bridge Welding Code (latest edition) |
| Fabrication Method | 100% shop welded – all primary structural welds completed in controlled factory conditions |
| Arch Section Type | Closed-box arch ribs with internal stiffeners |
| Main Steel Material | ASTM A709 Grade 50; Grade 50W and HPS 70W optional |
| Design Load | HL-93 (design truck + design lane load) |
| Fatigue Design | Per AASHTO LRFD Article 6.6.1.2 |
| Welding NDT | 100% UT on primary load-carrying welds |
| Field Connection | High-strength bolted, no field welding required |
| Corrosion Protection | Epoxy paint / Hot-dip galvanizing (ASTM A123) / Weathering steel |
| Design Life | 75 – 100+ years |
Fabrication & Quality Assurance
• Certified ASTM A709 steel with complete MTR mill test reports- • CNC precision cutting & beveling for accurate assembly
- • Automated SAW/GMAW factory welding
- Full AWS-certified welding team + CWI inspection
- • 100% UT primary weld testing + MT/PT auxiliary inspection
- • Full factory pre-assembly before shipment
- • Professional blast cleaning & customized coating systems
- • Optional third-party inspection: SGS / Bureau Veritas
- • Complete delivery documents: design calculation, WPS/PQR, NDT reports, as-built drawings
Conclusion
The Shop Welded AASHTO LRFD Steel Arch Bridge is a high-quality, long-life permanent road bridge solution. With 100% shop welding, strict AASHTO LRFD & AWS D1.5M compliance, modular bolted assembly and 75–100+ year service life, it ensures:
- • Factory-level stable superior weld quality
- • Full US highway standard compliance
- • Heavy-load highway traffic adaptability
- • Fast on-site installation & low site disruption
- • Complete quality documentation for project approval
Send your bridge span, width and site conditions. We provide AASHTO-standard design, shop welding specification and fixed quotation within 48 hours.
Shop welded for quality, AASHTO engineered for permanent road infrastructure.
Similar Products
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