Transportation data

View roadway, traffic and crash data as well as GIS maps and data layers for state routes and public roads. 

Learn about crash-related data products and services such as how to request crash data and the crash data portal which displays summarized crash statistics.

Find information about the roadway data related products and services such as functional classification, highway performance monitoring system, national highway system, roadway images and state highway log.

You can get instant access to state transportation data, maps and interactive map applications.

Learn about our traffic data collection program and the data and services we provide such as annual mileage and travel information, peak hour vehicle traffic report, traffic count services, traffic data request and summary statistics, and vehicle speed reports.

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.