Colorado Precast Concrete manufactures manholes, inlets and other precast concrete products for water systems. Our customers range from the individual home owner to large contractors. We supply precast products for large subdivisions and commercial sites.

We design our products directly from the engineering plans and follow those specifications for the required manhole diameter, gasket type and size, rings and covers, pipe angles, and any necessary waterproofing treatments.

Click on items below for pdf  Drawings.




Storm Inlets

Colorado Precast Concrete offers standard CDOT and WYDOT storm inlet boxes  built with blockouts to accept storm pipe.  …


Standard Size Manholes

The standard inside diameters are 4, 5, 6, 8, 10 and 12 foot. Our manholes meet ASTM C-478


Storage Buildings

Storage Buildings…