Reinforced Concrete Box Culverts

SEMA Precast is the leading  producer of wet-cast reinforced concrete box culverts in Colorado. Brand new state-of-the-art forming equipment ensures the highest quality products. SEMA Precast manufactures a full line of standard precast box culverts, as well as specially designed products to meet jobsite needs. We also offer special end sections with rebar dowels for connections to structures, headwalls, and wingwalls.

  • Brand new, highest-quality forming equipment
  • Watertight gasketed joints per ASTM C1677
  • Wet-cast production for highest quality product and durability
  • Capable of producing sizes ranging from 4’x3′ to 20’x12′
  • Special pieces for connections to other structures, manhole access, pipe blockouts, wingwalls, and headwalls

39th Ave and Park Hill Drainage

Denver, Co.

SEMA Precast supplied 5,714 lineal feet of box culvert for the City & County of Denver’s 39th Ave & Park Hill Drainage project.

The project consisted of 9 different size box culverts ranging from 8’x5′ to 15’x10′.  All boxes supplied with water-tight gasketed joints.