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Several blocked culverts below Interstate 90 and State Route 202 in east King County are a barrier to fish migration and will be replaced with new, larger culverts beginning in 2025. Contractor crews working for WSDOT will replace three culverts under I-90 in Preston and one culvert under SR 202…

Several new ramp meters have been implemented and activated throughout Spokane at on-ramps to both east and westbound I-90 with more coming. The ramp meters are used to space out vehicles as they enter I-90 to reduce the "platooning" of vehicles as they enter and reduce collisions. The…

This project replaces the existing bridge deck on the I-90 Vantage Bridge to maintain the structural integrity, ensure the safety of the highway and extend the life of the bridge. The Vantage Bridge was built in 1962 and the last time the bridge received a major overhaul was in 1982.

This project will remove, replace, and rehabilitate existing guardrail along I-90 from MP 192 in Adams County to MP 272.60 in Spokane County to preserve function, ensure terminals are crashworthy and that the system meets standards.

Reconnecting waterways where our roads act as barriers is a priority for the state. In western Washington, that means building hundreds of fish passable structures under state highways to create habitat essential for meeting fish recovery goals. Beginning in 2025, WSDOT will build multiple…

This project will rehabilitate the concrete deck of the I-90 overcrossing at Rosamond Avenue in Spokane. Crews will repair delaminated and deteriorated areas and apply a protective inlay to provide a sound, smooth surface, prevent further corrosion of the reinforcing steel, and preserve structural…

This project will replace a total of 51 luminaires at six interchanges along I-90 between the city of Sprague in Lincoln County and the SR 904 interchange in Spokane County. The aging illumination system will be replaced with modern components including LED light fixtures which will save on…

Growth in Snoqualmie Valley has made the I-90/SR 18 interchange one of the busiest in the state, causing backups during peak times and busy travel weekends. To improve traffic flow, WSDOT is building a diverging diamond interchange and adding two lanes on SR 18 between the interchange and Deep…

The project has four locations: Interstate 90 at Issaquah Creek and tributaries, State Route 202 at Little Bear Creek, SR 203 at Thayer Creek, and SR 900 at Green Creek. Each project will enhance fish habitat and allow for fish passage by adding meander bars, modifying stream bed material,…

Crews working for WSDOT will realign the stream and grade the channel for Unnamed Tributary to Lake Creek on Southeast 104th Street just south of the city of Snoqualmie in King County. The stream’s culvert will remain as-is during this project’s stream bed work. This project is required to support…

This work was completed in spring 2023. Contractor crews repaired a steel girder that supports 142nd Place Southeast over Southeast Eastgate Way and I-90. The girder was damaged when it was struck by a truck hauling construction equipment that was too tall.

The Modular Assembly Joints on the I-90 EB East Channel Bridge are deteriorating and have reached the end of their service life. Replacing the existing expansion joints will preserve the bridge’s structural integrity and extend its service life.

This project will rehabilitate just under one mile of eastbound Interstate 90 Mercer Slough Bridge from Bellevue Way Southeast to I-405. Crews working for WSDOT will install new bearing seats, modify expansion joints and install new expansion seals. This work will preserve the structural integrity…

This project will pave nearly two miles of eastbound Interstate 90 from 118th Avenue Southeast (MP 9.72) to 150th Avenue Southeast (MP 11.55) in Bellevue. Crews working for WSDOT will rehabilitate the existing roadway surface and restore the roadway striping. In addition, on the bridge over…

In September 2022, contractor crews working for WSDOT replaced the original expansion joint on the east end of the westbound I-90 Homer Hadley bridge that connects Mercer Island to Seattle.

In 2022, we added drainage and replaced about 1,550 feet of concrete panels on westbound I-90 with asphalt. During 2023 we replaced select concrete panels to smooth a 1-mile section of rough freeway about 1.5 miles west of SE High Point Way. In addition, we completed repairs at two bridges along…

The Interstate Bridge Replacement program is a bi-state effort with the Washington State Department of Transportation and the Oregon Department of Transportation to replace the aging Interstate Bridge along I-5 over the Columbia River between Portland and Vancouver. The program will build a new,…

The North Spokane Corridor (NSC) is a 10.5-mile multi-modal corridor. When complete, the NSC will be a 60-mile per hour, north/south limited access facility that connects I-90 at the south (just west of the existing Thor/Freya interchange) and connects to US 2 (at Farwell Road) and US 395 (at…

We repaired or replaced the concrete on 17 bridges in King, Snohomish, Skagit and Whatcom counties. Before this project, many of these concrete bridge decks had patches covering old potholes and ruts. Contractor crews removed damaged and patched areas and replaced it with new slabs of concrete.…

Crews working for WSDOT will perform crack sealing and asphalt patching on numerous routes in King, Snohomish, Skagit, Whatcom and Island counties. The work also includes concrete panel replacement on seven miles of Interstate 5 from just north of the Ship Canal Bridge to just south of Northeast…

The Northwest Region Emergency Pavement Repair project covered 88 locations among 23 communities in King, Snohomish, Skagit and Whatcom counties. The repairs spanned three interstates, 12 state highways and about 20 miles of pavement repair, including four bridge decks.

Completed in…

Crews repaired and replaced damaged driving surfaces of several bridges in Grays Harbor, Mason, Jefferson, and Kitsap Counties.

The Puget Sound Gateway Program combines the SR 509 Completion Project in King County and the SR 167 Completion Project in Pierce County to complete critical missing links in Washington state's highway and freight network. These projects build important new connections to the state's…

Dozens of preservation projects are planned to revive Interstate 5 in King and Snohomish counties. Washington’s main freeway was built in the 1960s and needs major preservation and renovation work. Over the coming years, Revive I-5 projects will include pavement repair and full replacement,…

Workers repaired the surface of westbound SR 16. Repairs were also made to three bridge expansion joints.

This project completes final roadway work around the south portal of the SR 99 tunnel and builds new pedestrian and bicycle amenities that connect Seattle’s stadiums with the waterfront.

Crews will upgrade and replace key elements of the SR 104 Hood Canal Bridge. The construction bolsters systems that guide the bridge together and keep both halves of the bridge connected.

This project will remove a fish passage barrier on State Route 104 at Lyon Creek just west of 35th Avenue Northeast in Lake Forest Park. Contractor crews working for WSDOT will upgrade an existing 6-foot by 4-foot box culvert with a 24-foot structure. This new structure has the potential to open…

This project improves safety along State Route 104 in Jefferson County at Shine Road/Paradise Bay Road and at State Route 19. At SR 19, a single-lane roundabout has been built. At Shine Road/Paradise Bay Road, a single-lane metered roundabout will be built. The meter will be active only after a…

To improve safety and reduce head-on collisions, crews will construct a single-lane roundabout at State Route 104 and SR 19 (Beaver Valley Road).

Roundabouts are a proven solution to reduce the frequency and severity of collisions while maintaining a consistent flow of traffic.…