WSDOT US 101/SR 109 Fish Barriers Removal Progressive Design-Build

This $120M Washington State Department of Transportation (WSDOT) US 101/SR 109 Grays Harbor/Jefferson/Clallam Fish Barriers Removal Project is a doorway project to a larger program of fish barrier removals in the state of Washington. This Progressive Design-Build Alternative Delivery project will design and correct the first 29 of 413 culverts currently blocking migration passage for salmon and steelhead runs.

This ecologically important project is part of Washington State’s response to the U.S. District Court’s 2013 ruling on infrastructure blockages to the native fish habitats, an issue raised by 21 northwest Washington Tribes. The ruling required the state to open 90% of potential upstream habitats by 2030. WSDOT will replace outdated culverts with concrete box culverts, steel-arched culverts, or bridges to increase the likelihood of salmon and steelhead migration through the channels.

WSDOT, together with the Washington Department of Fish and Wildlife, has identified 413 culverts currently blocking critical fish migration. This first Alternative Delivery contract will select a Progressive Design-Build team to correct the first grouping of 29 passage locations. Overall scope includes design and construction of compliant structures, stream and habitat restoration, roadway restoration, complex construction staging, removal of the existing 9 stream crossing structures, and traffic maintenance. Once complete, this project will successfully restore nearly 37 miles of potential habitat across the Olympic Peninsula.

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