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Between summer 2020 through summer 2022, contractor crews working for the Washington State Department of Transportation worked to remove and replace two existing culverts that lead to the Chehalis River located underneath SR 6 near Twin Oaks Road (between mileposts: 46.32 to 46.59) in Lewis County.

This project replaces existing rapid flashing beacons with overhead pedestrian signals at 11 locations along State Route 7 in the Pierce County communities of Parkland and Spanaway. Some locations will have improved pedestrian ramps, extensions to the median islands, turn restrictions, and…

This summer, construction crews working for WSDOT repaired and replaced worn sections of asphalt on SR 7. The work zone was broken up into two areas. The first was from the intersection of SR 507 near Joint Base Lewis-McChord, to 169th Street. Crews paved the northbound right lane only. The second…

This project removed two barriers to fish and repaved a section of Mountain Highway East (SR 7).

Spring and summer 2023, construction crews working for WSDOT repaired and replaced worn sections of asphalt on eastbound State Route 8 and on SR 108. The work on SR 8 occurred between US 12 in Grays Harbor County and US 101 in Thurston County. Crews also repaved a portion of westbound SR 8 in…

To address increased congestion, WSDOT has widened SR 9 from two lanes to four from its southern starting point to Marsh Road, except for a 3-mile section in the middle—from 176th Street Southeast to SR 96—where there is only one northbound lane and two southbound lanes. This project will add a…

WSDOT improved the intersection of SR 9 and SR 204 in Lake Stevens by adding four roundabouts and widening SR 9 to two lanes in each direction immediately south of the intersection. These improvements help manage congestion and improve mobility, provide better access to area businesses and provide…

A culvert that runs under State Route 9 at milepost 34.7, south of Lake McMurray near the North Centennial Trail Trailhead, was failing and needed to be replaced. The bottom of the culvert had rusted away, which resulted in water washing away the side of the road. This caused a sinkhole on the…

Beginning in July 2022, contractor crews working for WSDOT removed two fish barriers under State Route 9 near Lake McMurray in Skagit County at Lake Creek and Norway Park Creek, replacing them with two new fish passable structures.

This project will widen State Route 9 between Marsh Road and 2nd Street near the city of Snohomish, build southbound bridges directly to the west of the existing bridges—which will become northbound lanes—over the Snohomish River, and rebuild the on-ramp from 2nd Street to southbound SR 9. It also…

In June 2022, Granite Construction Company, contractor crews working for WSDOT, built a roundabout at the intersection of State Route 9 and Bickford Avenue.

Beginning in February 2022, Interwest Construction Inc., contractor crews working for WSDOT, constructed a roundabout at the intersection of SR 9 and South Lake Stevens Road to improve safety and mobility. Crews also improved fish habitat by replacing the existing culvert under South Lake Stevens…

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 as early as winter 2024, WSDOT will install…

State Route 900/Martin Luther King Jr. Way South in the unincorporated Skyway-West Hill community is a busy roadway between Renton and Seattle serving drivers, freight, public transit, bicyclists and pedestrians. This project will construct bicycle and pedestrian facilities on SR 900 that allow…

In the Bryn Mawr-Skyway area of King County between Seattle and Renton, just west of 68th Avenue South, we worked with King County Metro to build 500 feet of new sidewalk and a raised platform for pedestrians to access a Metro bus stop on the east side of the highway.

This new…

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…

Beginning in July 2024, contractor crews working for WSDOT will re-establish fish habitat in the Pilchuck River along State Route 92, just south of Sleepy Hollow Road, near Granite Falls. This project will replace large woody debris constructed as fish habitat in 2016, much of which has washed away…

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…

Part of a culvert running underneath the State Route 99 on-ramp to eastbound SR 518 in Tukwila failed, damaging the on-ramp as well as the shoulder along the Airport Expressway on-ramp to eastbound SR 518.

Contractor crews repaired failed section of the culvert to prevent further…

The SR 99 tunnel replaced the Alaskan Way Viaduct along Seattle's central waterfront, carrying State Route 99 beneath downtown Seattle. The 2-mile tunnel opened to drivers in February 2019.

This project will replace watertight doors, demolish the East Control Tower’s top two floors and seal the new roof on the northbound State Route 99 1st Avenue South Bridge from mileposts 26.83 to 26.88. This project will also include waterproof membrane roof work on the West Bridge Control Tower…

This project will resurface the northbound and southbound lanes of State Route 99 from South 272nd Street to SR 516 to extend the pavement service life. Crews will grind and inlay new Hot Mix Asphalt (HMA), perform pavement repair, traffic loop replacement, striping and traffic control. Pedestrian…

Contractors working on behalf of WSDOT will replace 13 expansion joints on the State Route 99 Spokane Street Bridge and rehabilitate the bridge’s drainage system. This work will help preserve the service life of the bridge.

Crews working for WSDOT will texture the existing concrete pavement of the north and southbound State Route 99 tunnel. The technique of shot-blasting the roadway will provide added friction for vehicles’ tires and improve traction.

This project will remove barriers to fish under several state highways in Kitsap. Work is planned in 29 locations on several state highways.

Once complete, this project will restore potential habitat to fish.

This project will rehabilitate nearly two miles of State Route 99 from the SR 516 intersection in Des Moines/Kent to South 200th Street in SeaTac. Crews will grind away existing asphalt and install new hot mix asphalt, giving the roadway a smoother surface and extending its lifespan. Pedestrian…

The eastbound span of the Tacoma Narrows Bridge opened July 15, 2007 as the first modern toll road in Washington.

What at the time was considered state of the art technology is nearing the end of its usable life. Over the course of several months WSDOT will replace the aging and…

On February 16, 2021, due to heavy seasonal rainstorms and harsh winter weather, the existing culvert drainage system that runs underneath a portion of US 101 at milepost 1.2, just north of the Astoria-Megler Bridge, began to fail causing a portion of the road to give way and sink.

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Crews working for WSDOT built a replicated stream between Coffee Creek and Goldsborough Creek in Shelton. The project also rebuilt both southbound on- and off-ramps at the US 101/West Shelton/Matlock interchange.

WSDOT replaced the US 101 Elwha River Bridge in Port Angeles. Replacing the bridge has ensured that US 101 continues to be a reliable transportation facility for decades to come.

The new bridge is 40 feet wide and has two 12-foot lanes with two-8 foot shoulders. (The old bridge was…