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Donald McwayneGood team members always offer budget in time and answer questions with patience, great job! -
Joseph AlexanderI am feeling fully respected when taking with Grace and she always gave the best advice. The first batch of the bridge panels got are great too. thanks all.
AASHTO LRFD Custom Curved Steel Arch Bridge for Long-Span River Crossing Construction
| Place of Origin | China |
|---|---|
| Brand Name | FASEC |
| Certification | ISO 9001; AWS D1.5M Certified; AWS CWI; AISC IBR/ABR |
| Model Number | Steel Arch Bridges |
| Minimum Order Quantity | 100 MT |
| Price | USD 1,000-1,500/MT |
| Packaging Details | Sea Freight (Container/Bulk Vessel) |
| Delivery Time | 30-60 Days |
| Payment Terms | L/C, D/A, D/P, T/T |
| Supply Ability | 5,000-15,000 MT/Year |
Product Details
| Design Standard | AASHTO LRFD (Sections 4 & 6) | Welding Standard | AWS D1.5 |
|---|---|---|---|
| Arch Ribs | Box Sections Or Built-up I-sections | Corrosion Protection | Hot-dip Galvanizing (≥100 μm) Or High-build Epoxy |
| Field Connection | High-strength Bolted Or Full-penetration Groove Welds | Quality Control | UT/RT NDT, WPS/PQR, MTRs, Dimensional Records |
| Customization | Site-specific Curvature, Span Length, And Loading | Applications | Long-span River Crossings, Estuaries, Straits |
Product Description
Custom Fabricated Curved Steel Arch Bridge – Complying with AASHTO LRFD for Long‑Span River Crossing Projects is a turnkey solution developed for infrastructure owners and contractors who require exceptional span capability, site‑specific curvature, and uncompromising structural integrity. Our offering covers the entire bridge system – from the main arch ribs and tie girders to the decking and connection details – all fabricated in‑house and delivered as a ready‑to‑erect package. By adhering strictly to AASHTO LRFD provisions, we ensure that every bridge withstands combined dead loads, live traffic, wind, seismic events, and temperature variations over its full design life. Drawing on extensive river‑crossing project experience, we integrate advanced computational design, precision metal forming, and stringent quality management to deliver bridges that are both structurally efficient and visually striking.
Standardized AASHTO LRFD Compliant Design
- • All structures follow the latest AASHTO LRFD Bridge Design Specifications, complying with Section 6 for Steel Structures and Section 4 for Structural Analysis.
- • Engineers conduct comprehensive finite‑element analysis to verify member stress, deflection and overall stability across all required load combinations.
- • Strict fatigue and fracture control is implemented; seismic design adopts response spectrum and push‑over analysis where required.
- • Complete design calculations, shop drawings and erection documents support independent peer review with clear code traceability.
High-Precision Custom Curved Fabrication
- Long‑span arches often require complex three‑dimensional curvature in both horizontal and vertical planes. Our fabrication facility is equipped with CNC plate rolling machines, hydraulic press brakes, and induction bending equipment capable of forming steel plates and sections to tight radii with minimal distortion. We employ heat‑straightening and cold‑bending techniques as appropriate for the material grade and thickness. All curved members undergo dimensional verification using laser scanning against the theoretical 3D model. Splice locations are optimized for transport and assembly, with high‑strength bolted connections or full‑penetration groove welds adopted at field joints. Our shop pre‑assembly verifies fit‑up and bolt hole alignment, significantly lowering on-site erection risks.
Primary Structural Components
| Item | Description |
|---|---|
| Arch Ribs | Core load-bearing members, available as box sections or built-up I-sections; reinforced to resist axial compression and out-of-plane bending. |
| Tie Girders | Undertake horizontal arch thrust; variable-depth welded plate girders balancing structural weight and rigidity. |
| Cross Frames & Bracing | Enhance global stability and evenly distribute wind and seismic loads. |
| Base Material | Standard ASTM A709 Grade 50; optional HPS 70W for weight-sensitive or low-temperature projects. |
| Connection Method | Precision-machined joints, adaptable to crane lifting and incremental launching erection schemes. |
Decking and Wearing Surface Systems
The bridge decking system is engineered to carry AASHTO HL‑93 design traffic and future permit loads, with multiple solutions to select: orthotropic steel decks, closed‑grid steel floors, or steel-concrete composite decks. Orthotropic panels are preferred for long-span river crossings to cut dead weight while improving fatigue resistance. All decks adopt hot‑dip galvanizing (≥100 μm) or high-build epoxy coatings to resist moisture and de-icing salt corrosion. Integrated shear connectors achieve composite action with concrete slabs, and professionally detailed expansion joints accommodate thermal displacement. Optional waterproof membranes and asphalt surfacing can be arranged to guarantee driving comfort and drainage performance.
Quality Control, Testing, and Certification
- • Certified ISO 9001:2015 quality management system with professional NDT lab and AWS-certified welding inspectors.
- • Welds receive full visual inspection; critical joints use UT / RT testing in accordance with AWS D1.5 standards.
- • Mechanical tests including tensile, bend and Charpy impact testing are carried out for every steel batch.
- • Factory holds AISC certification for complex steel bridges, supported by regular third-party audits.
- • Surface treatment complies with SSPC‑SP10, with full coating thickness monitoring during production.
- • Each shipment includes complete documentation: MTRs, WPS/PQR, NDT reports, dimensional records and anti-corrosion certificates.
Project Management, Logistics, and Technical Support
Long‑span river crossings demand meticulous planning from fabrication to final erection. Our dedicated project manager acts as a single point of contact, coordinating oversized cargo transport via barges or heavy-haul vehicles. We supply on‑site technical support covering alignment control, bolt tensioning and field splice supervision. Our engineering team collaborates closely with contractors to develop feasible erection sequences and temporary works design, reducing construction risks and shortening schedules. Supported by mature global logistics arrangements, we coordinate customs clearance and cargo insurance to simplify project execution for clients.
Why Partner with Us for Your Next River Crossing
Choosing our custom fabricated curved steel arch bridge means investing in decades of engineering excellence and a proven track record of successful long‑span projects on rivers, estuaries, and straits. We understand that each river crossing presents unique challenges – varying water depths, navigation requirements, seismic zones, and site access constraints – and we tailor every solution to overcome these hurdles. Our commitment to AASHTO LRFD compliance ensures your bridge meets the highest international standards for safety and durability, while our responsive communication and on‑time delivery keep your project on track.
Contact our bridge engineering team today to discuss your project parameters – span length, curvature, loading, and site conditions. We will provide a preliminary design concept, a budgetary cost estimate, and a fabrication schedule tailored to your timeline. Let us help you cross that river with a bridge that combines structural excellence, architectural beauty, and lasting value.
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