Learn about current transportation network improvement and preservation activities throughout the state.
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I-90 - Eastgate to SR 900 - Corridor Improvements
Timeline: August 2019 - Winter 2022/2023
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 are also building sound walls in strategic locations to minimize traffic noise.
I-90 - Liberty Park Pl to Sprague Ave - Paving - Complete October 2021
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.
I-90 - Ritzville to Tokio - Paving
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…
I-90 - Snoqualmie Pass East - Cabin Creek Interchange to West Easton Interchange (Phase 3)
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 will increase traffic capacity and improve safety by adding a new lane in each direction, replacing concrete pavement, stabilizing rock…
I-90 - Snoqualmie Pass East - Hyak to Keechelus Dam (Phase 1) - Complete Fall 2019
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.
I-90 - Snoqualmie Pass East - Stampede Pass Interchange to Cabin Creek Interchange (Phase 4)
Timeline: Summer 2026 - Fall 2029
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.
I-90 - Snoqualmie Pass East Project
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.
I-90 - Sunset Creek - Fish Passage
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…
I-90 Barker to Harvard
Timeline: June 2020 - August 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.
I-90 Bridge Deck Preservation – Patching
Timeline: August 2022 - 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.
I-90 Floating Bridges Anchor Cable Replacement
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.
I-90 Geiger Interchange Improvements - Complete October 2022
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…
I-90 Lincoln Co. to BNSF RR Bridge - Roadside Improvements - Complete June 2021
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.
I-90 Medical Lake Interchange Improvements - Complete 2021
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…
I-90 Mullan Road Overcrossing Bridge Deck Repair - Complete August 2022
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…
I-90 Soderman Creek/SR 202 Unnamed Tributary to Patterson Creek - Fish Passage
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…
I-90 Spokane Ramp Meters - Complete June 2023
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…
I-90 Tokio to Lincoln Co. Line - Paving - Complete September 2021
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.
I-90 Vantage Bridge – Replace Bridge Deck and Special Repairs
Timeline: Fall 2023 - Fall 2026
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.
I-90 – Lewis, W. Village Park, Schneider & Unnamed Tributaries to Tibbetts creeks – fish passage
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…
I-90 – Rosamond Bridge - Deck Rehabilitation
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…
I-90 – Sprague to SR 904 - Illumination Rebuild
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…
I-90 – SR 18 Interchange Improvements
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 will build a diverging diamond interchange and add two lanes on SR 18 between the interchange and Deep Creek.
I-90/142nd Pl SE over I-90 - Bridge repair
Timeline: Winter 2023
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…
I-90/Homer Hadley East Approach Bridge - Modular Expansion Joint - Complete September 2022
Timeline: Summer 2022-fall 2022
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.
I-90/WB E Sunset Way to E Fork Issaquah Crk - PCCP Replace & Deck Overlay
Timeline: Summer 2022 - Fall 2023
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…
Industrial Way/Oregon Way (IWOW) Intersection Improvements Project
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 IWOW project is being designed to reduce…
North Spokane Corridor
Timeline: August 2001 - 2030
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…
Northwest Region Strategic Concrete Bridge Deck Preservation
Timeline: Fall 2021 - Spring 2024
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…
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