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This project adds capacity for both directions of I-90 between Eastgate and West Lake Sammamish Parkway interchanges by restriping the roadway and adding an auxiliary lane. Crews are also building sound walls in strategic locations to minimize traffic noise.

The pavement conditions within the limits of this project on I-90 have fallen below an acceptable rating. This project will rehabilitate the roadway along this section to preserve the pavement and pavement structure.

This project will rehabilitate roughly 13 miles of Interstate 90 from Ritzville to approximately five miles east of Sprague Lake in Adams County. Once the project is completed by grinding and inlaying new HMA (Hot Mix Asphalt), the roadway surface will have a smoother ride that will be preserved…

Phase 3 is part of a 15-mile corridor improvement project to improve safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity. We will increase traffic capacity and improve safety by adding a new lane in each direction, replacing concrete pavement, stabilizing rock…

Phase 1 was part of a 15-mile corridor improvement project to improve safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity.

Phase 2 was part of a 15-mile corridor improvement project to improve safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity.

Phase 4 is part of a 15-mile corridor improvement project to increase safety and reliability and reduce congestion along I-90 from Hyak to the Easton vicinity.

The I-90 Snoqualmie Pass East Project improves 15 miles from Hyak to Easton. Phases 1 and 2 from Hyak to the Stampede Pass interchange are complete. Phase 3 is underway.

As part of the state's fish recovery efforts, WSDOT has made it a priority to reconnect waterways where our roads act as barriers. In western Washington, that means building hundreds of fish passable structures under state highways in the next decade to create habitat gain essential for…

Several projects funded through Connecting Washington and partner funds will address the improvement needs on Interstate 90 at the Barker Road interchange, the Harvard Road interchange and local network connections.

Multiple bridge decks have fallen below an acceptable rating. This project will rehabilitate the bridge decks by patching potholes and replacing fatigued sections of bridge decks.

In Spring 2022, contractor crews working for WSDOT will begin replacing the 38 steel anchor cables on the Lacey V. Murrow and Homer M. Hadley Memorial floating bridge across Interstate 90. Work is expected to be complete this fall.

Due to significant growth on the West Plains, three new roundabouts will be constructed at the Geiger/Grove Road interchange with I-90. The reconfigured interchange at Geiger Boulevard and I-90 will provide for more efficient vehicle movement. Improvements include interchange ramp terminal…

This project sets out to reduce the risk and severity of run-off-the-road collisions throughout the highway corridor by removing vertical rock cuts and outcrops from the median or by shielding the rock with barrier.

The SR 902/Medical Lake interchange reconstruction project is located at the existing State Route 902 interchange with I-90 at exit 272 west of Spokane. This project includes the construction of three roundabouts, a new parallel bridge over I-90 and a shared-use path that will connect to the West…

This project will rehabilitate the deteriorating concrete bridge deck for the Mullan Road Bridge over I-90. Crews will remove approximately 1.5 inches of existing concrete through hydro-demolition. Once removed, existing reinforcing steel that is exposed will be evaluated to determine the need and…

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 2024. 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…

Contractor crews will repave roughly eight miles of Interstate 90 from the Tokio interchange to the Lincoln County line during the summer of 2021.

This project will replace 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.

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 2024, 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 will build a diverging diamond interchange and add two lanes on SR 18 between the interchange and Deep Creek.

Starting March 6, 2023, contractor crews will repair a 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 northbound lane of 142nd Place Southeast remains closed…

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.

On westbound I-90 just east of Issaquah, in late summer 2022 we added drainage and replaced about 1,550 feet of concrete panels with asphalt. Through summer 2023 we also will replace select concrete panels to smooth a 1-mile section of rough freeway about 1.5 miles west of SE High Point Way. In…

The Industrial Way/Oregon Way (IWOW) Intersection is a four-legged intersection with Industrial Way (SR 432) as the east and west legs, Oregon Way as the north leg and SR 433 as the south leg, which crosses the Columbia River into Oregon.

The IWOW project is being designed to reduce…

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 will repair or replace the concrete on 17 bridges in King, Snohomish, Skagit and Whatcom counties. Many of these concrete bridge decks have patches covering old potholes and ruts. Contractor crews will remove damaged and patched areas and replace it with new slabs of concrete. This will help…