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 C1577
• 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