Bridge Steel Structures

Bridge steel structures: The Framework of Modern Connectivity

Our bridge steel structures: Where Strength, Durability, and Design Innovation Converge

Steel is the material of choice for the world's most ambitious and enduring bridges. Its exceptional strength-to-weight ratio, fabrication versatility, and proven resilience make it ideal for creating spans that are both structurally sound and economically efficient. Our bridge steel structures represent the pinnacle of engineering excellence, designed to withstand extreme loads, environmental challenges, and the test of time while enabling architectural beauty and long-span achievements.

Why Steel for Bridges?

• Unmatched Strength & Ductility: Steel offers high tensile and compressive strength, allowing for longer spans and reduced number of supports. Its inherent ductility rovides crucial resilience against seismic events, impact, and overload conditions, allowing for deformation without sudden failure.

• Lightweight Advantage: The reduced self-weight of steel structures minimizes foundation costs and enables easier transportation and erection, especially in challenging sites or for rapid bridge construction projects.

• Prefabrication & Quality Control: Components are fabricated to precise tolerances in controlled factory conditions, ensuring higher quality, consistency, and faster on-site assembly compared to cast-in-place concrete.

• Adaptability & Future-Proofing: Steel bridges can be more easily strengthened, widened, or modified in the future to accommodate changing traffic demands, a significant advantage over other materials.

• Sustainability: Steel is highly recyclable, with most structural steel containing significant recycled content. At the end of its life, the entire structure can be recycled again.

Our Bridge Steel Structures Range & Expertise

We specialize in the fabrication and supply of all critical steel components for bridges:

1. Primary Load-Bearing Members:

• Plate Girders: Custom-built I-girders from welded steel plates for medium to long spans. We offer a variety of web and flange configurations optimized for specific load and span requirements.

• Box Girders: Fabricated square or rectangular sections offering superior torsional resistance and esthetic appeal, ideal for curved bridges and sites requiring exceptional stability.

• Rolled Beam Girders: Standard wide-flange beams (W-beams) for efficient and economical short to medium spans.

• Trusses: Through and deck trusses in Pratt, Warren, and other configurations for heavy loads, railway bridges, and iconic designs.

2. Decking Systems:

• Orthotropic Steel Decks: Integrated deck and girder systems where a stiffened steel plate acts as the top flange of the main girders and the riding surface, significantly reducing dead weight for long spans.

• Composite Decks: Steel beams integrated with a concrete slab via shear connectors, leveraging the compressive strength of concrete and the tensile strength of steel.

• Open-Grating Decks: For pedestrian bridges or areas where drainage and weight reduction are priorities.

3. Substructure & Special Elements:

• Piers & Towers: Fabricated steel piers, pylons, and towers for cable-stayed and suspension bridges.

• Bearings & Expansion Joints: Supply of critical components that accommodate thermal movement, rotation, and seismic displacement.

• Architectural Steelwork: Custom fabrications for aesthetic features, coverings, and special architectural elements.

Material & Technical Specifications

• High-Performance Steels: We work with grades including ASTM A709 (Bridge Steel), with options for HPS 50W, 70W, and 100W for enhanced weathering resistance and toughness.

• Corrosion Protection: We offer a range of protection systems tailored to the bridge's
environment:

• Weathering Steel (ASTM A588): For a low-maintenance, self-protecting patina in suitable atmospheres.

• Advanced Coating Systems: Multi-coat epoxy, zinc metallizing, and other systems for maximum longevity in corrosive environments.

• Fabrication Standards: All fabrication is performed in compliance with AASHTO/AWS D1.5 Bridge  
Welding Code and other relevant international standards (EN, ISO), ensuring the highest level of quality and safety.

Applications

Our steel structures are engineered for:

• Highway & Interstate Bridges

• Railway & Heavy Rail Bridges

• Long-Span Cable-Stayed & Suspension Bridges

• Pedestrian & Cycle Bridges

• Movable Bridges (Bascule, Lift, Swing)

• Accelerated Bridge Construction (ABC) Projects

Our Integrated Services

• Design & Engineering Support: In-house engineering for value engineering, connection design, and fabrication detailing.

• Full-Scale Fabrication: Modern facilities equipped with CNC machinery for precision cutting, drilling, and welding.

• Quality Assurance & NDT: Rigorous quality control including ultrasonic testing, magnetic particle inspection, and more.

• Logistics & Project Management: Expert handling of large component shipping and erection sequencing support.

Build with the Strength and Certainty of Steel.

Contact us today to discuss your bridge project. Our team of experts is ready to provide innovative, cost-effective, and durable steel structure solutions from conception to completion. Contact our bridge engineering team today to discuss your project  requirements and discover how our integrated design, fabrication, and construction solutions can deliver a bridge that combines structural excellence with timeless beauty.