Statewide Transportation Improvement Program (STIP)

2020-2023 STIP-Approved

The 2020-2023 Statewide Transportation Improvement Program (STIP) was approved in January 2020 as required per the Federal Transportation Act. Approximately 1,200 statewide transportation improvement projects utilizing $3.3 billion in federal funds are in the 2020-23 STIP statewide, representing Washington’s highest priority projects.

20-10 STIP Amendment Available for Public Comment
The 20-10 STIP Amendment (pdf 266 kb) is now available online for review and comment from October 26, 2020 to 5 pm November 4, 2020.
Written comments can be sent to: Nancy Huntley or Steve Ahlsten, WSDOT, P.O. Box 47390, Olympia WA 98504-7390, e-mail:, or by fax at 360-705-6822.

STIP Amendment Due Dates

The STIP amendment schedule provides consistency for WSDOT regions and MPOs to submit projects for inclusion into the STIP. 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: 1/17/20
  • February: 2/21/20
  • March: 3/20/20
  • April: 4/17/20
  • May: 5/15/20
  • June: 6/19/20
  • July: 7/17/20
  • August: 8/21/20
  • September: 9/18/20
  • October: 10/16/20


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

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