Library & research reports

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

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

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1,557 work zone-related crashes

were recorded on state highways in 2025.

542 people were injured

in 2025 due to work zone-related crashes. 

29% increase in fatality collisions

in work zones from 2024 to 2025.