We are Colorado’s exclusive supplier of the J-J Hook® temporary traffic barrier system.
J-J Hook® barriers offer a self-aligning connection that automatically hooks into place, requiring no pins, bolts, or loose hardware.
Meets the new MASH/FHWA requirements set to take effect January 1st, 2020.
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.