All Products
-
Structural Steel Fabrication
-
Heavy Steel Fabrication
-
Metal Steel Fabrication
-
Sheet Metal Fabrications
-
High Rise Steel Building Construction
-
Structural Steel Frame Construction
-
Steel Girder Bridge
-
Steel Truss Bridge
-
Pedestrian Overpass Bridge
-
Prefab Steel Frame
-
Light Steel Framing
-
Galvanized Steel Structure
-
Stainless Steel Fabrication
-
Steel Street Light Pole
-
Overhead Sign Structures
-
Steel Arch Bridges
-
Precast Girder Bridge
-
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.
Modular Steel Box Girder Bridge – Fast Installation Prefabricated System for Highway & Overpass
| Place of Origin | China |
|---|---|
| Brand Name | FASEC |
| Certification | ISO 9001; EN 1090-1 FPC; CE; AWS CWI; AISC IBR/ABR |
| Model Number | Steel Girder Bridge |
| 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 | Welding Standard | AWS D1.5M |
|---|---|---|---|
| Deck Type | Orthotropic Steel Deck / Concrete Composite Deck | Corrosion Protection | Hot-dip Galvanizing (ASTM A123), Epoxy Coating, Weathering Steel |
| Field Connection | High-strength Bolted (A325/A490) Or AWS D1.5M Field Welding | NDT Inspection | 100% UT For Full-penetration Tension Welds; MT/PT For Key Welds |
| Customization | Customized To Project Requirements (span, Width, Load, Site Conditions) | Applications | Global Highway Overpass And Infrastructure Projects |
You can tick the products you need and communicate with us in the message board.
| NDT Inspection |
|---|
Product Description
The Modular Steel Box Girder Bridge is a shop-fabricated, pre-engineered superstructure system designed for rapid deployment on highway overpass and grade-separated crossing projects. Modules are fully assembled in the factory, equipped with stiffeners, diaphragms, shear connectors and access hatches, then transported to site for fast bolted assembly. Engineered to AASHTO LRFD and fabricated under AWS D1.5M, this system ensures reliable structural integrity, efficient installation and long-term durability.
Modular Design – Factory Built, Site Ready
Segment Length: Typically 12m – 18m for road transport; up to 30m for barge/rail delivery.- Pre-Installed Components: Shear studs, stiffeners, diaphragms, and access hatches factory-welded, eliminating field fabrication work.
- Connection Method: High-strength bolted splices, featuring rapid assembly, weather resistance and convenient inspection.
- Deck Preparation: Top flange fitted with pre-welded shear connectors; concrete pouring can start immediately after module alignment.
Installation Speed Comparison
| Factor | Conventional Method | Modular System |
|---|---|---|
| On-site welding | Extensive | Minimal – bolted connections |
| Formwork / falsework | Required | Not required – steel deck serves as formwork |
| Weather sensitivity | High | Low – field welding largely reduced |
| Typical on-site duration | 3 – 6 months | 4 – 8 weeks |
| Traffic disruption | Extended | Significantly reduced |
Structural Performance – AASHTO LRFD Compliant
Loading Standard: Supports HL-93 live load, fatigue load, thermal effects and seismic combinations per AASHTO LRFD requirements.- Torsional Rigidity: Closed trapezoidal box section provides outstanding stability for curved alignments and eccentric loading conditions.
- Span Range: Single spans 6m – 50m; continuous spans up to 8 spans.
- Fracture Control: Tension zones designed as fracture-critical members (FCMs) with redundant load paths where necessary.
- Composite Action: Achieves full composite performance with concrete deck via factory-welded shear studs.
Fabrication – AWS D1.5M Certified
Code Compliance: AWS D1.5M Bridge Welding Code, the authoritative standard for welded bridge fabrication.- NDT Requirements: 100% UT inspection on full-penetration tension welds; MT / PT testing applied on fillet and non-critical welds.
- FCM Protocol: Implemented in accordance with Clause 12, including enhanced inspection, Charpy V-notch toughness testing and complete documentation.
- Production Supervision: AWS-Certified Welding Inspectors (CWIs) monitor all production procedures.
- Material Traceability: Complete welding records and Mill Test Reports (MTRs) supplied within the quality dossier.
Customization Options
| Parameter | Options / Range |
|---|---|
| Steel Grades | ASTM A709 (Grades 36, 50, 50W, HPS 70W), ASTM A572 |
| Bridge Width | 2m – 24m |
| Girder Depth | 0.8m – 3.5m |
| Span | 6m – 50m single span; continuous up to 8 spans |
| Deck Type | Orthotropic steel deck / Composite concrete deck |
| Corrosion Protection | Weathering steel / Epoxy paint / Hot-dip galvanizing (ASTM A123) |
| Field Connection | High-strength bolted (A325/A490) or AWS D1.5M field welding |
| Appurtenances | Barriers, railings, drainage, lighting brackets – factory or field installed |
Quality Assurance & Logistics
Factory Control: Adopts CNC cutting, robotic measurement and controlled welding environment to guarantee consistent quality.- Camber Preset: Modules manufactured with preset camber to offset dead-load deflection.
- Trial Assembly: Complete shop fit-up service available for critical projects.
- Third-Party Inspection: Accept independent inspection by SGS, BV, TÜV, or client-nominated institutions.
- Transport Solution: Modules reserved with lifting points and shipping frames; transportation routing assessment available.
- Site Support: Supply erection plans, lifting sequences and professional on-site supervision.
Conclusion – Faster, Safer, Certified
The Modular Steel Box Girder Bridge integrates factory machining precision with on-site construction efficiency. It delivers AASHTO LRFD-compliant, AWS D1.5M-welded structures and shortens construction cycle greatly compared with conventional solutions. Ideal for highway overpasses, urban flyovers and interchange projects, this system cuts traffic interruption, lowers construction risks and enables earlier opening to traffic.
Submit your project specifications including span, width, loading standard and timeline. Our engineering team will provide customized design, budget estimate and installation schedule. Contact us today.
Recommended Products