Learn about current transportation network improvement and preservation activities throughout the state.
Timeline: Summer 2022 – summer 2023
Through summer 2023, our contractor crews strengthened three bridges on Interstate 5 so they can better withstand a major earthquake. They wrapped steel “jackets” around the columns that support the bridges to hold the concrete together in an earthquake, reducing the chance of collapse. They also…
Timeline: Summer 2023 – Winter 2024
This project will build a noise wall along southbound Interstate 5 from East Edgar Street to Franklin Avenue East. Contractor crews working for WSDOT will construct a new noise wall to abate noise from the I-5 express lanes just south of the Ship Canal Bridge between Lake Union and Portage Bay.
Timeline: Winter 2022 - Spring 2024
We will install new overhead ramp meters for three on-ramps to northbound Interstate 5 for the HOV and general-purpose lanes at Swift Avenue South, South Michigan Street/South Bailey Street and Northeast 50th Street. These ramp meters will replace the existing meters that do not currently control…
Timeline: 2020 - 2025
People who use the interchange at I-5 and SR 523 (North 145th Street) in Shoreline need safe and efficient ways to move through this area, using all modes of transportation. This will be increasingly important with the arrival of Sound Transit Link light rail and the new Shoreline South/148th…
Timeline: Spring 2022 – 2027
We will rehabilitate I-5 between Yesler Way in Seattle and the Northgate vicinity with new concrete panels, pavement, expansion joints and deck repaving on the Lake View viaduct and Lake Washington Ship Canal Bridge. This project will be advertised for contractors in summer 2023. Work will start in…
Timeline: August 2019 - Spring 2023
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 also built sound walls in strategic locations to minimize traffic noise.
Timeline: Summer 2021 - October 2021
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.
Timeline: Spring 2023 - Fall 2023
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…
Timeline: Summer 2022 - Fall 2028
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 are increasing traffic capacity and improving safety by adding a new lane in each direction, replacing concrete pavement, stabilizing…
Timeline: Spring 2009 - Fall 2019
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.
I-90 - Snoqualmie Pass East - Keechelus Dam Vicinity to Stampede Pass Interchange (Phase 2) - Complete Fall 2019
Timeline: Summer 2015 - Fall 2019
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.
Timeline: Summer 2028 - Fall 2031
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.
Timeline: 2009 - 2029
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.
Timeline: 2023 - 2027
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…
Timeline: June 2020 - October 2023
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.
Timeline: August 2022 - July 2023
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.
Timeline: April 2022 - Fall 2022
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.
Timeline: April 2021 - October 2022
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…
Timeline: April 2021 - June 2021
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.
Timeline: July 2019 - June 2021
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…
Timeline: March 2022 - July 2022
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…
Timeline: Fall 2021 – Fall 2025
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…
Timeline: June 2018 - Summer 2023
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…
Timeline: July 2021 - September 2021
Contractor crews will repave roughly eight miles of Interstate 90 from the Tokio interchange to the Lincoln County line during the summer of 2021.
Timeline: Spring 2024 - Fall 2027
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.
Timeline: 2020 to 2029
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…
Timeline: June 2023 - November 2023
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…
Timeline: Spring 2023 - Fall 2024
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…
Timeline: 2022 - 2025
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…
Timeline: Winter 2023
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.