Statewide Transportation Improvement Program (STIP)

The STIP is a four-year prioritized multimodal transportation program compiled of state, local, tribal and public transportation projects that include highways, streets, roads, rail, transit-hubs, park & rides, bridges, sidewalks, bike lanes, trails and safety.

The STIP is a calendar year document and is developed on an annual basis. The draft STIP is available for public review and comment in November. The final STIP is submitted to Federal Highway Administration (FHWA) and Federal Transit Administration (FTA) in December and approved in January. STIP amendments are submitted to FHWA and FTA for approval January through October and are available for public review and comment concurrently for 10 calendar days.

Draft 2026-2029 Statewide Transportation Improvement Program (STIP)

Each year, the Washington State Department of Transportation develops the Statewide Transportation Improvement Program from local, metropolitan planning organization (MPOs), regional transportation planning organizations (RTPOs) and county transportation improvement programs (TIPs). This compilation of prioritized transportation improvement projects is now ready for review and public comment.

The draft 2026-2029 STIP (PDF 11.8MB) is a four-year program of multimodal transportation projects identified through state, metropolitan, regional, tribal, and local agency planning processes.

Projects that use Federal Highway Administration or Federal Transit Administration funds must be included in the STIP to authorize the expenditure of federal funds. Also, included are regionally significant projects funded through the Washington State Legislature Connecting WA and Movie Ahead Washington transportation packages. More than 1,100 statewide transportation improvement projects using $5.3 billion in federal funds are included in the 2026-29 STIP.

The Washington State Department of Transportation will accept comments for the draft 2026-2029 STIP until 5 pm Friday, Dec. 19. WSDOT will send any comments it receives to the respective local agency, metropolitan or regional planning organization for their consideration.

The comment period is the final step of a public engagement process that began locally during development of the individual transportation improvement programs. The collaborative effort between WSDOT, local agencies, metropolitan and regional transportation planning organizations ensures projects are consistent with local, regional, and state long-range plans.

Some county projects are not included in the draft STIP, as counties are required by state law to complete their transportation improvement programs by the end of December, so those projects are amended into the STIP in January.

The current 2025-28 STIP can be viewed using the Searchable Web Database below and a similar, searchable database of the 2026-29 STIP will be created in January 2026, following FHWA and FTA approval.

Written comments can be sent to: Nancy Huntley or Steve Ahlsten, WSDOT, P.O. Box 47390, Olympia WA 98504-7390, or by email at Hqlpstip@wsdot.wa.gov.

2025-2028 STIP - Approved

The 2025-2028 Statewide Transportation Improvement Program (STIP) was approved in January 2025 as required per the Federal Transportation Act. Approximately 1,180 statewide transportation improvement projects utilizing $4.6 billion in federal funds are in the 2025-28 STIP statewide, representing Washington’s highest priority projects.

2025-2028 Table of Contents

The table of contents contains the various sections of the document.

Appendix

The appendix section shows the various appendices to the STIP document.

The 12 Metropolitan Planning Organizations (MPOs) in Washington State are required to provide an annual listing of projects that had federal funds obligated in their areas for the previous calendar year. These listings are due by the end of March each year.

STIP amendment due dates

The STIP amendment schedule provides consistency for WSDOT regions and MPOs to submit projects for inclusion into the STIP. STIP amendment due dates are the third Friday of every month. Local agencies and regional WSDOT Program Management personnel need to be aware of MPO timelines where applicable and work together to meet critical dates.

2026-2029

January: 1/16/26
February: 2/20/26
March: 3/20/26
April: 4/17/26
May: 5/15/26
June: 6/19/26
July: 7/17/26
August: 8/21/26
September: 9/18/26
October: 10/16/26

It is critical that all submittals are forwarded to Nancy Huntley (huntlen@wsdot.wa.gov) no later than the due date identified in the chart above, to be included in the monthly amendment process. Rural project information may be submitted directly to Nancy Huntley as well based on an agreed upon process with the affected RTPO.

Web-based STIP

STIP Training Manual (PDF 4.5MB)

The web based system allows local agencies to input their projects online once, for both the 6-year TIP and STIP. Local agencies will then submit their projects electronically to their respective Metropolitan Planning Organization (MPO) or Regional Transportation Planning Organization (RTPO).

April 2023 STIP Training is available as an online video:
https://wsdot.wa.gov/publications/fulltext/localprograms/STIP/2023-Training/story.html
Download presentation (PDF 520KB)

Previous STIPs

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