Fish passage

Learn how we're reconnecting streams under state highways to improve fish passage around the state.

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

Learn more in the latest Fish Passage Annual Report (PDF 5.1MB) and our YouTube video on fish passage restoration.

Learn about fish passage barriers and why we fix them.

Learn about the federal court injunction for fish passage on this page and view photos & videos of our completed projects.

Find our fish biennial project delivery plans.

Find fish passage maps, get GIS data, and view our annual reports.

Learn how to participate in a habitat restoration partnership with us.

Learn how to get involved with fish passage projects. See what projects are scheduled for design or construction, look at applicable standards & guidance, and view training opportunities.

8,683 animals crossed the Snoqualmie Pass East Project area

as recorded by WSDOT and partners in 2020 and 2021.

46% increase in Amtrak Cascades ridership to 251,000 passengers

in 2021 compared to 172,000 in 2020.

Nine wetland and stream mitigation sites across 32.7 acres added

to our monitoring program in 2021 to help offset climate change impacts.