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The project is on I-5 from North Lake Samish (south of the city of Bellingham) to the city of Ferndale near the Nooksack River. The Portland Cement Concrete Panels within the project limits are approximately 60 years old and are near or have exceeded their design life. The project will provide…

This project built a noise wall along southbound Interstate 5 from East Edgar Street to Franklin Avenue East. Contractor crews working for WSDOT constructed the 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. The wall…

This project repaired and improved the southbound I-5 travel lanes between Blaine and the Nooksack River crossing just south of Ferndale. Along this 10-mile stretch of southbound I-5 in Whatcom County, the freeway lanes, shoulders, and some on- and off-ramp connection points were showing signs of…

We installed new overhead ramp meters at the Swift Avenue South, South Michigan Street/South Bailey Street and Northeast 50th Street on-ramps to northbound Interstate 5 in Seattle. The new ramp meters regulate both the general purpose lanes and the HOV lanes. They replaced existing ramp meters that…

Washington State Department of Transportation and contractor crews will replace existing fish barriers under I-5 and Pacific Highway near Stanwood with three new fish-passable arch structures to restore fish passage.

As of March 2026, crews have installed new culverts beneath…

This project will build a stormwater treatment facility beneath the north end of the I-5 Ship Canal Bridge. This facility will capture, carry, and clean stormwater runoff from I-5 by removing harmful pollutants before the water flows into the ship canal.

This project improved four miles of southbound Interstate 5 in Everett, from Broadway Avenue to 100th Street Southeast. Crews working for WSDOT replaced aging pavement, creating a smoother driving surface for years to come. This project also replaced traffic loops, pavement markings and replace…

In summer 2025, local developer Benaroya Company will start work to improve the SR 505 interchange over I-5 at Exit 63 in Lewis County. Tapani Inc. will build three roundabouts—at the on- and off-ramps and at Mickelson Parkway—between mileposts 2.24 and 3.08.

The project also…

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…

This project will remove a fish passage barrier along Thornton Creek under Interstate 5 near State Route 523/NE 145th Avenue in Shoreline. Contractor crews working for WSDOT will replace the two existing 2,000-foot-long, 6-foot culverts with three fish-passable structures. The current culverts are…

This project removes and replaces several outdated culverts under I-5 roads for the Unnamed Tributaries to Friday Creek, Lake Creek, Unnamed Tributary to Lake Creek and Chuckanut Creeks in Whatcom and Skagit Counties.

WSDOT will replace outdated culverts with new fish-passable…

This project will remove three barriers to fish passage along two Unnamed Tributaries to Silver Lake and an Unnamed Tributary to Penny Creek under Interstate 5 near 112th Street Southeast in Everett. Contractor crews working for WSDOT will remove existing culverts and replace them with fish-…

In summer 2027, crews will remove two Highway Advisory Radios (HAR) along southbound I-5—at milepost 72.4 near Rush Road in Lewis County and milepost 41.2 near North Kelso Avenue in Cowlitz County—and replace them with Variable Message Signs (VMS).

HAR broadcasts traffic updates on…

This project will rehabilitate approximately 5.42 miles of I-90 from BNRR Bridge (MP 267.84) to Geiger Road (MP 273.26) in Spokane County by removing the surface of the existing pavement and paving with Hot Mix Asphalt (HMA).

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…

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.

WSDOT is building bridges over Sunset Creek in Bellevue along both directions of I-90, Southeast Eastgate Way and Southeast 36th Street in Bellevue. These bridges replace culverts that block fish passage on Sunset Creek, allowing natural stream conditions to return in this section of the waterway…

The Interstate 90 Judkins Park Station – Reconnecting Communities study will identify and recommend changes to the five WSDOT I-90 ramps at Rainier Avenue South to improve safe travel for all modes and increase access to the Judkins Park Link light rail station via transit transfer, walking,…

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.

This project will construct two new ramp meters to westbound I-90 at the Liberty Lake and Harvard Road interchanges in Spokane County. 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 ramp…

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…

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 built a diverging diamond interchange and added two lanes on SR 18 between the interchange and Deep Creek.

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 be removed and replaced with a fish-passable structure. This project is required to…