Tested annually by the Minnesota Department of Transportation, concrete manhole products from Willow Creek Concrete meet and exceed required specifications. All adjusting rings are produced with admixes and have internal steel wire reinforcement for increased strength and durability.

Concrete Adjusting Rings:
24" x 6"
24" x 4"
24" x 2"
27" x 6"
27" x 4"
27" x 2"


Concrete Manhole Block:
8" Barrell
6" x 8" Solid


Other Products:
2' x 3' Risers
Hydrant Blocks
Horse Collars
Concrete Bricks
Portland Cement
Spec Mix Mortar Mix

Please contact us for pricing information