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SR 20 North Cascades Highway – Preview of 2022 work – 2022 fish passage construction

SR 20 Skagit River fish passage

Beginning in June 2022, contractor crews working on behalf of WSDOT will remove two existing fish passage barriers located between Van Horn Lane (MP 91) and just east of Sauk Connection Road (MP 94.6) near Concrete. Construction is expected to be complete later this fall.

Map shows locations of two fish passage culverts that will be removed from Van Horn Lane and just east of Sauk Connection Road in Concrete.
SR 20 Skagit River Fish Passage project

State highways cross streams and rivers in thousands of places in Washington State, which can impede fish migration. WSDOT has worked for nearly three decades to improve fish passage and reconnect streams to help keep our waterways healthy. At WSDOT, fish barrier correction is a priority.

What should travelers expect

Traffic will continue to operate on SR 20 in its normal configuration as a temporary bypass is constructed. Shoulder and single lane closures can be expected during this time and intermittent travel delays may be possible. During construction of the bypass, flaggers will control traffic.

Once complete, traffic will be shifted to the temporary bypass so that construction of the new fish passable culverts can begin. Traffic on the bypass will operate in a single lane with alternating two-way traffic controlled by flaggers or temporary signals. Pedestrians and bicyclists and other rollers will be accommodated using a shoulder.

Following construction, traffic will return to normal configuration and the temporary bypass will be removed. Shoulder closures and intermittent traffic delays may be required during this final phase and flaggers will control traffic.