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Sullivan Road / Trent Avenue Interchange
The city is planning to reconstruct the existing interchange at Sullivan Road and Trent Avenue (SR 290). This project replaces both Sullivan Road bridges over the BNSF Railway tracks and four lanes of Trent. The existing signalized diamond interchange will be replaced with tow new roundabouts, one on Sullivan Road and one on SR-290. The project will decrease traffic congestion, improve vehicle capacity, and improve both mobility and safety for all users: A shared-use path will be added along Sullivan's west side and a new, wider sidewalk will be built on the east side.
The city evaluated four potential interchange configurations in fall 2022. Through 2023 and 2024, design efforts progressed until the city conducted a value engineering exercise in 2025. The value engineering outcome resulted in the selected final project configuration. The city's process included collaboration with the Washington State Department of Transportation (WSDOT), BNSF Railway, regional stakeholders, neighboring industries, and the general public.
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Site of Interchange
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Sullivan/Trent Interchange Roundabouts
The city has secured approximately $17.7 million of federal and local funds to deliver the engineering and right-of-way phases of the project. The city is now pursuing construction phase funding. The estimated total project cost is $50,700,000.
BUILD FY26 Funding Request
For BUILD, the project's eligible estimated total cost is $45.3 million. In February 2026, the city will submit a grant application for $25 million to the USDOT's Better Utilizing Investments to Leverage Development (BUILD) discretionary grant program.
Project Schedule
The city initiated the engineering phase in March 2023. Engineering, environmental and Right-of-Way phases are scheduled to conclude occur in 2026. The construction timeline is dependent on funding.
| Phase | Begin | End |
|---|---|---|
| Design Engineering | March 2023 | March 2026 |
| Environmental Documents (NEPA) | January 2024 | May 2025 |
| Right-of-Way | June 2026 | December 2026 |
| Construction | Unfunded | |
| Public Engagement | April 2019 | Ongoing |
Letters of Support
The project has been a federal agenda priority for Spokane Valley since 2019. Partnerships include Spokane County, WSDOT, BNSF Railway, Spokane Regional Transportation Council, and a variety of local and regional stakeholders and freight industry representatives. View letters of support.
Selection of Alternative
Learn more about the city's 2022 evaluation of the four alternatives and its 2025 value engineering exercise:
- December 13, 2022 City Council Presentation
- December 20, 2022 City Council Presentation
- Interchange Reconfiguration Presentation (PDF) at Open House - October 2022
- Exhibit: Roundabout fit and function at an Interchange (PDF) - October 2022
- Interchange Control Evaluation study (PDF) which included all four alternatives
Title VI Notice to Public
It is the policy of the City of Spokane Valley to assure that no person shall, on the grounds of race, color, national origin, or sex, as provided by Title VI of the Civil Rights Act of 1964, and related State and Federal Statutes, be excluded from participation in, be denied the benefits of, or be otherwise discriminated against under any of its federally-funded programs and activities. Any person who believes his/her Title VI rights have been violated may file a complaint via email with the City's Title VI Administrator or call 509-720-5111.
The City of Spokane Valley in accordance with Section 504 of the Rehabilitation Act (Section 504) and the Americans with Disabilities Act (ADA), commits to nondiscrimination on the basis of disability, in all of its programs and activities. This material can be made available in an alternate format by emailing John Whitehead or by calling 509-720-5111.