Transportation studies and reports

Through studies into transportation and infrastructure, we gather facts and suggest improvements to Washington's highways, streets, and bridges.

Transportation report pages and documents

Active studies
The following studies were assigned to the JTC in the 2023-25 transportation budget or the 2024 supplemental transportation budget (sec.204)
Completed studies
This page provides access to final reports and other associated materials for all of the JTC studies that have been completed.
Requests for proposals
The Joint Transportation Committee (JTC) uses Requests for Proposals (RFPs) in our process for procuring consultant teams to work on our studies.
Transportation resource manual January 2023 update
The Transportation Resource Manual provides a comprehensive overview of Washington State’s transportation system, its governance, and its funding.

These studies and reports are developed by the Joint Transportation Committee. See our agency page to learn more about JTC.