Precast Manholes

Precast manholes are available from Colorado Precast Concrete for sewer systems and water lines. Our precast manholes can be used in small residential applications, or in large commercial developments. We’ve installed precast manholes all over Colorado and Wyoming, and the Rocky Mountain region.

Our large inventory of precast manholes are available between 12″ and 120″ in size, and can be customized with a variety of coatings (gaskets and cast iron, aluminum rings, or covers and grates) of your choosing. All of our precast manholes meet ASTM C-478 Standard Specifications – just one of the many ways we strive for excellence with our precast concrete products.

If you’re in the market for precast manholes, don’t waste a single minute. Contact Colorado Precast Concrete today!


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Small Diameter Manholes

Small diameter manhole risers are available from 20″ Ø to 36″ Ø and are used for septic tank/cistern …






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Standard Size Manholes


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