Steel Box Girder Bridge
A box girder bridge is a bridge in which the primary load-bearing structure consists of hollow, box-like girders made of steel, concrete, or composite materials. These bridges are known for their high torsional stiffness, aerodynamic efficiency, and suitability for long spans.
✔ Closed-Section Design – The hollow box shape provides excellent torsional (twist) resistance, making it ideal for curved bridges.
✔ Material Options – Can be constructed from:
Steel (lightweight, prefabricated)
Prestressed Concrete (durable, low maintenance)
Steel-Concrete Composite (combines benefits of both)
✔ Aerodynamic Stability – The streamlined shape reduces wind effects, crucial for long-span bridges.
✔ Versatile Construction Methods – Can be built using cast-in-place, precast segments, or incremental launching.
Steel Box Girder – Lightweight, used in long-span bridges (e.g., Millau Viaduct, France).
Concrete Box Girder – Economical for medium spans (e.g., Lake Pontchartrain Causeway, USA).
Composite Box Girder – Steel girder + concrete deck (e.g., Rio–Antirrio Bridge, Greece).
Balanced Cantilever – Segments built symmetrically from piers.
Incremental Launching – Assembled on-site and pushed into place.
Full-Span Prefabrication – Entire girders built offsite and lifted into place.
✅ High Strength & Stiffness – Resists bending and twisting better than I-girders.
✅ Long Spans Possible – Suitable for spans up to 300+ meters (concrete) or 500+ meters (steel).
✅ Aerodynamic Efficiency – Performs well in high-wind areas.
✅ Aesthetic Flexibility – Can be shaped for modern, sleek designs.
❌ Complex Construction – Requires skilled labor and precise formwork.
❌ Higher Initial Cost – More expensive than simple beam bridges.
❌ Maintenance Challenges – Closed sections may need internal inspection access.
???? Millau Viaduct (France) – World’s tallest cable-stayed bridge with steel box girders.
???? Great Belt Bridge (Denmark) – Hybrid steel-concrete box girder design.
???? Sutong Bridge (China) – Longest cable-stayed bridge with a steel box girder deck.
???? Zakim Bridge (USA) – Aesthetic composite box girder in Boston.
Box girder bridges are a preferred choice for modern, long-span bridges due to their strength, stability, and design flexibility. While more complex to build than simple beam bridges, their performance in challenging environments makes them indispensable in modern infrastructure.
A box girder bridge is a bridge in which the primary load-bearing structure consists of hollow, box-like girders made of steel, concrete, or composite materials. These bridges are known for their high torsional stiffness, aerodynamic efficiency, and suitability for long spans.
✔ Closed-Section Design – The hollow box shape provides excellent torsional (twist) resistance, making it ideal for curved bridges.
✔ Material Options – Can be constructed from:
Steel (lightweight, prefabricated)
Prestressed Concrete (durable, low maintenance)
Steel-Concrete Composite (combines benefits of both)
✔ Aerodynamic Stability – The streamlined shape reduces wind effects, crucial for long-span bridges.
✔ Versatile Construction Methods – Can be built using cast-in-place, precast segments, or incremental launching.
Steel Box Girder – Lightweight, used in long-span bridges (e.g., Millau Viaduct, France).
Concrete Box Girder – Economical for medium spans (e.g., Lake Pontchartrain Causeway, USA).
Composite Box Girder – Steel girder + concrete deck (e.g., Rio–Antirrio Bridge, Greece).
Balanced Cantilever – Segments built symmetrically from piers.
Incremental Launching – Assembled on-site and pushed into place.
Full-Span Prefabrication – Entire girders built offsite and lifted into place.
✅ High Strength & Stiffness – Resists bending and twisting better than I-girders.
✅ Long Spans Possible – Suitable for spans up to 300+ meters (concrete) or 500+ meters (steel).
✅ Aerodynamic Efficiency – Performs well in high-wind areas.
✅ Aesthetic Flexibility – Can be shaped for modern, sleek designs.
❌ Complex Construction – Requires skilled labor and precise formwork.
❌ Higher Initial Cost – More expensive than simple beam bridges.
❌ Maintenance Challenges – Closed sections may need internal inspection access.
???? Millau Viaduct (France) – World’s tallest cable-stayed bridge with steel box girders.
???? Great Belt Bridge (Denmark) – Hybrid steel-concrete box girder design.
???? Sutong Bridge (China) – Longest cable-stayed bridge with a steel box girder deck.
???? Zakim Bridge (USA) – Aesthetic composite box girder in Boston.
Box girder bridges are a preferred choice for modern, long-span bridges due to their strength, stability, and design flexibility. While more complex to build than simple beam bridges, their performance in challenging environments makes them indispensable in modern infrastructure.
Q: How can I get a quote for my project?
A: You can contact me anytime, via WeChat, WhatsApp, Email, or phone. I will get back to you as soon as possible.
Email: jack@xingyasteel.com
Phone: +86 17305413116
WeChat: 17305413116
WhatsApp: +86 17305413116
Q: How long can I get the price?
A: If possible, please provide project CAD drawings, pictures or specific requirements. We usually quote within 6 hours. If you want to get a quote as soon as possible, please let us know via WeChat, WhatsApp or email so that we can prioritize your inquiry.
Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory or production line on site to understand our strength and quality. We will arrange a professional team to serve you. You just need to send your itinerary and leave the rest to us.
Q: Do you provide customized product services?
A: Of course, our professional R&D team can design and produce the products you need according to your specifications and drawings. For example: special size, special control, OEM, etc.
Q: Where is the loading port?
A: Normally, we ship from Tianjin Port, Qingdao Port and Shanghai Port. Of course, we can also accept the port you specify.