Library & research reports

Take a look at available library services and find current information about transportation research projects and reports.

Discover library services available to you, search our collections, access digital materials and contact our librarians.

Learn about applied transportation research conducted by WSDOT. Find information on current research projects, access research reports, watch our webinars and contact our research managers.

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Improved access to 98.2 miles of upstream fish habitat

through 15 fish passage projects in 2021.

28% increase in the value of exports and imports 

from $90.2 billion in 2020 to $115.5 billion in 2021.