Jensen Precast is one of the largest producers of reinforced precast concrete box culvert products in the industry.  With 3 styles of box culvert, and manufacturing plants located throughout the Western United States, both contractor and specifier have limitless options to fulfill project requirements. All of our Box Culvert structures are designed by a staff of Professional Civil & Structural Engineers certified by the NPCA and adhere to AASHTO, ASTM and ACI guidelines.