How To - Install a Permanent Culvert

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How To - Install a Permanent Culvert

Choosing the appropriate type of culvert and installing it correctly is important to the health of associated streams. Learn how to correctly install permanent culverts.

Culverts are the most commonly used form of stream crossing. The following tips will enable you to construct a well-functioning and stable culvert.

Provide a suitable bed for the culvert composed of compactable material.
Compact fill around and over the culvert in 1-foot lifts.
The fill above the culvert must be 12 inches of 0.5 times the diameter of the culvert, whichever is greater. For example, a 20-inch culvert must have 12 inches of fill above the pipe, while a 40-inch culvert will need 20 inches of fill above the pipe.
Apply armoring or vegetation around culverts to prevent erosion, as needed.

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