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Product Positioning:Providing high torsional stiffness steel box girder solutions specially designed for long-span highway bridges, urban viaducts, rail transit, and cross-sea bridges, suitable for curved and skewed alignments.

Core Advantages:The closed-box cross-section offers excellent torsional stiffness and lateral stability, effectively adapting to curved bridges, skew bridges, and eccentric load conditions; factory prefabrication in segments and on-site assembly can significantly shorten construction cycles and reduce the risk of working at height on-site.

Global Compliance:Strictly meets mainstream international standards including European standards (EN 1993-2 Steel Bridge Design and EN 1090 Manufacturing with CE marking), American standards (AASHTO LRFD Bridge Design Specifications and AWS D1.5 Bridge Welding), and Australian standards (AS 5100 Bridge Series and AS 1554 Steel Structure Welding).

Service Assurance:Provides full-process technical support from cross-section optimization design, buckling and fatigue checks, segment division and transportation planning, to on-site welding and temporary support system design.

• Standards: AASHTO LRFD (American Association of State Highway and Transportation Officials Load and Resistance Factor Design), EN 1993-2 (Eurocode 3 Part 2 – Design of Steel Structures for Bridges), AS 5100 (Standards Australia Bridge Design Code Series), ASTM A709
• Materials: ASTM A709 Gr.50/Gr.70, S355JR/S460, Q355B (GB/T 1591 Low Alloy High Strength Structural Steel)
• Design: Custom single/double box girder, integral/segmental prefabrication, anti-corrosion integrated design
• Dimensions: Span 10–80m, width 3.5–12m (customizable)
• Features: High rigidity, low maintenance, fast erection, suitable for heavy load
• Applications: Highways, urban roads, bridges, overpasses, industrial passages
• Services: Custom design, quality inspection, ocean packaging, global logistics & technical guidance

• Closed box structure with strong overall rigidity, torsion & seismic resistance, stable and safe for long-span and curved scenarios.
• Prefabricated in factory with fine manufacturing, high precision, stable quality, fast on-site installation, greatly shortening construction period.
• Lightweight high-strength design, lighter self-weight, effectively reducing foundation cost and improving project economy.
• Professional anti-corrosion protection system, aging & fatigue resistant, long service life, low later maintenance cost.
• Flexible and customizable alignment, simple and beautiful appearance, balancing traffic function and urban landscape effect.

· Standards Compliance: Engineered to AASHTO LRFD, ASTM A709 & AWS D1.5/D1.1 codes

· Span Range: Optimized for main spans 200m–500m

· Structural Performance: High torsional rigidity for curved & skewed bridges

· Weight Advantage: 30–50% lighter than concrete bridges

· Construction Speed: Prefabricated modular design for fast installation

• Closed box structure, excellent torsion and bending resistance, suitable for various complex working conditions.
• Light self-weight and low foundation cost, greatly reducing the overall project investment.
• Factory prefabrication + on-site rapid installation, shortening the construction period and realizing investment return in advance.
• Corrosion-resistant and durable, low maintenance cost, outstanding cost performance throughout the life cycle.
• Flexible shape customization, combining practicality and landscape, suitable for multi-scenario needs.

Material: ASTM A709 or China Q355 steel
Type: Steel Box Beam
Design Feature: America standard
Application: Long-Span Steel Bridge
Manufacturer: FAMOUS
Customization: Available for Span, Load, and Connection Requirements
Advantages: High Load Capacity, Fast Installation
Warranty: 2 Years Structural Guarantee