Steel Box Culverts

Corrugated steel box culverts are available in spans up to 50 ft, and are an economical alternative to conventional bridges. These low profile structures are ideal bridge replacements where maintaining the existing road grade is essential.

These bridges are manufactured from standard structural plate or deep corrugated structural plate. Adding special reinforcing elements to standard structural plate or special rib plates to the standard and deep corrugated structural plate creates the flexural capacity required for the very flat top and sharp corners.


The foundation for box culverts can be designed as a conventional concrete footing with steel footer pads or a full steel invert. Corrugated steel box culverts can be designed for low, wide waterway requirements with heights of cover between 1.4 to 5.0 feet and various loading situations.


The benefits of steel box culverts include:

  • Structural Capacity
  • Lightweight Construction
  • Easy Installation
  • Aesthetically pleasing
  • Mainenance free
  • Long service life
  • Design flexibility