High Strength Steel Box Girder Bridge ODM Prefabricated - 10-300m Spans, S355-S460 Steel Grades
Our ODM prefabricated steel box girder bridges utilize high-strength steel construction for superior load-bearing capacity and long-span applications. These bridges feature hollow rectangular or trapezoidal steel boxes as the primary structural element.
Standard steel box girder bridges consist of:
- Top plate (bridge panel) - 12-30mm thickness
- Beam web - 12-30mm thickness
- Bottom plate - 12-30mm thickness
- Longitudinal stiffeners
- Transverse stiffeners
- Diaphragm plates (cross beams)
- Secondary plates - 10-20mm thickness
Factory prefabrication of sections (10-30m lengths) followed by on-site welding assembly ensures precision and structural integrity.
Ideal for bridges with 3 lanes or width-to-span ratio
Suitable for wider bridges where single box dimensions become impractical for production, transportation, or installation.
Optimal for smaller spans with larger bridge widths, featuring uniformly spaced main beams for balanced load distribution.
- Span Range: 10-300 meters single span
- Carriage Way: Single lane, double lanes, multilane, walkway configurations
- Loading Capacity: Compliant with AASHTO HL93, HS15-44, HS20-44, HS25-44 standards
- Steel Grades: S355JR, S355J0, S460J0, Grade 55C, ASTM A572 GR50/GR65
- Lightweight construction with significant steel savings
- High flexural and torsional stiffness for structural stability
- Rapid installation and simplified maintenance procedures
- Excellent suitability for continuous beam formations
- Modern, aesthetically pleasing design with clean lines
- Hollow structure facilitates easy installation of ancillary facilities
Our manufacturing processes comply with ISO9001, ISO14001, ISO45001, and EN1090 standards, ensuring consistent quality and reliability.
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