Happy Hollow Culvert

Royalton, Vermont | Town of Royalton

The Town of Royalton secured FEMA funds to replace a culvert that had been undermined by a large storm event. DuBois & King designed a 12-ft-wide by 7-ft-tall metal arch plate culvert that was sized to accommodate large, native boulders to attenuate flows and provide eddies for fish to rest in while traveling up the stream. D&K selected a culvert structure that was delivered to the site in pieces to allow the contractor to assemble the lower portions of the structure in place, install native boulders and natural channel materials into the structure, and then fit and assemble the upper portions of the metal arch prior to burying the structure. This AOP-friendly design also substantially reduced the cost and time required for construction. 

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Project Elements

Metal arch culvert to replace a hydraulically inadequate structure damaged by storm flows

Sustainable Elements

AOP/Smart-Stream design to restore fish passage