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.

2023-2026 STIP - Approved

The 2023-2026 Statewide Transportation Improvement Program (STIP) was approved in January 2023 as required per the Federal Transportation Act. Approximately 1,400 statewide transportation improvement projects utilizing $5.1 billion in federal funds are in the 2023-26 STIP statewide, representing Washington’s highest priority projects.

23-01 (January) STIP Amendment Available for Public Comment

The 23-01 (January) STIP Amendment (PDF 1,7MB) is now available online for review and comment from February 2, 2023, to 5 pm February 11, 2023.
Written comments can be sent to: Nancy Huntley or Steve Ahlsten, WSDOT, P.O. Box 47390, Olympia WA 98504-7390, or by e-mail:

2023-2026 STIP document

Detailed STIP information and explanations.

2023-2026 Table of Contents

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

  1. Introduction (PDF 1MB)
  2. Organization of the STIP (PDF 1MB)
  3. Financial plan and resources (PDF 1MB)
  4. Operation and maintenance (PDF 1MB)
  5. Consistency with long-range
    statewide & metropolitan transportation plans (PDF 1MB)
  6. Performance measures (PDF 1MB)
  7. Consultation & selection process (PDF 1MB)
  8. Community engagement (PDF 1MB)
  9. STIP amendments & administrative modifications (PDF 1MB)


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

  1. State self-certification statement (PDF 117KB)
  2. Financial feasibility table (PDF 70KB)
  3. STIP administration (PDF 781KB)
  4. MPO/RTPO/WSDOT directory (PDF 464KB)
  5. STIP format & project listing (PDF 777KB)
  6. Source of funds (PDF 791KB)
  7. Grouped projects (PDF 663KB)
  8. Performance measures & targets table (PDF 60KB)
  9. Annual obligation listing (PDF 642KB)

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.

  • Benton-Franklin Council of Governments (BFCG) (PDF 576KB)
  • Chelan-Douglas Transportation Council (CDTC) (PDF 104KB)
  • Cowlitz-Wahkiakum Council of Governments (CWCG) (PDF 500KB)
  • Lewis Clark Valley MPO (LCV) (PDF 198KB)
  • Puget Sound Regional Council (PSRC) (PDF 2.2MB)
  • Skagit Council of Governments (SCOG) (PDF 840KB)
  • Southwest Washington Regional Transportation Council (RTC) (PDF 1MB)
  • Spokane Regional Transportation Council (SRTC) (PDF5.6MB)
  • Thurston Regional Planning Council (TRPC) (PDF 775KB)
  • Walla Walla Valley MPO (WWV) (PDF 795KB)
  • Whatcom Council of Governments (WCOG) (PDF 7.6MB)
  • Yakima Valley Conference of Governments (YVCOG) (PDF 1MB)

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.


  • January: 1/20/23
  • February: 2/17/23
  • March: 3/17/23
  • April: 4/21/23
  • May: 5/19/23
  • June: 6/16/23
  • July: 7/21/23
  • August: 8/18/23
  • September: 9/15/23
  • October: 10/20/23

It is critical that all submittals are forwarded to Nancy Huntley 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).

Previous STIP's

Traction tires are a special type of tire

manufactured with at least 1/8 of an inch tread. Traction tires are usually marked with a mountain/snowflake symbol, the letters M+S or “All Season.”

Carry chains, practice before leaving

Requiring chains keeps traffic moving during storms rather than closing a pass or roadway.

Prep your car. Fill up your gas tank,

pack jumper cables, ice scraper, warm clothing, snacks and water.