Roadway data

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.

This information defines how a route should perform in serving the flow of traffic through a highway network. It is the grouping of highways, roads and streets by the character of service they provide and was developed for transportation planning purposes.

The Highway performance monitoring system (HPMS) is a national level highway information system which includes extent, condition, performance, use and operating characteristic data for public roadways nationwide.

The National Highway System includes the Interstate Highway System as well as other roads important to the nation's economy, defense and mobility.

Request and view our collection of digital imagery of the state highway system. Use our state route viewer tool to view the roadway by milepost.

The following reports contain roadway geometric data in various forms, including horizontal and vertical alignment, road life (contract history) and highway classification.

The State Highway Log is annually published and designed to provide a record of current highway system information and a source for computing distances between major points.

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.