Culverts & Outflow Pipe Headwalls

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Culverts and outflow pipes often require soil stabilization around the localized area of culvert placement, especially at the inlets and outlets. To stabilize soil conditions around culvert Inlets and outlet gabion headwalls, wing walls, and scour aprons are often implemented.

Gabion headwalls are designed to protect the slopes of an embankment against lateral scour as well as retain the embankment itself and to increase culvert efficiency by providing a flush inlet as opposed to a projecting one.  Gabion headwalls can be designed and constructed in a variety of configurations and typically include wing walls and scour aprons. The wing walls prevent scour, soil erosion, retain the embankment adjacent to the culvert, control grade elevations and direct water flow. The scour apron is placed at the base of the inlet our outlet and is designed specifically to prevent scour and erosion on the base.

Below are example installation photos