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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…

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 rehabilitate roughly two miles in each direction of State Route 99 from the SR 516 intersection to South 200th Street. Crews will grind and inlay new Hot Mix Asphalt giving the roadway a smoother surface and preserving it for years to come. Pedestrian curb ramps will also be…

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…

This project removed and replaced an outdated culvert under US 101 west of Port Angeles at Indian Creek. To keep traffic moving, crews constructed a temporary bypass bridge near the site as the new bridge over Indian Creek was built.

The culvert was replaced with a new 180-foot…

This project addresses multiple barriers to fish under US 101 between Sequim and Discovery Bay.

This project removes and replaces several outdated barriers to fish migration under US 101 near Leland Valley Road NE in Jefferson County. The north and south tributaries at mileposts 290.3 and 291.8 will be replaced with larger box culverts, and the site crossing Leland Creek will be replaced with…

This fish barrier removal project replaces an outdated culvert along US 101 south of Forks. A 175-foot-long concrete girder bridge will replace the existing metal pipe to improve fish migration in May Creek.

This stretch of roadway, often referred to as “Cosi Hill,” sit on a pre-historic landslide and suffers from chronic roadway settlement. Heavy rains triggered the roadway to drop more than five feet.

Crews reopened the highway to two-way travel on Friday, May 20. Final roadway…

This project will correct 29 identified streams and culverts that cross under US 101 and SR 109 in Grays Harbor, Jefferson and Clallam Counties. The culverts under the highways do not allow fish to access vital habitat.

Once complete, this project will restore nearly 37 miles of…

This project removed barriers to fish at Steamboat Creek, Harlow Creek and Fisher Creek. New bridges carry US 101 over each creek. The improvements helps improve access to fish habitat.

This project repaired and preserved three separate areas of two state highways. Crews will also replace failing expansion joints for the US 101 Sol Duc River Bridge in Clallam County.

This project replaced six culverts under US 101 in Grays Harbor County. The culverts were located under US 101 between Aberdeen and Humptulips.

This project replaces bridge bearings on the north side of the US 101 Chehalis River Bridge in Aberdeen.

Workers repaired the surface of southbound US 101 in areas between Mud Bay and US 101 in Tumwater. Crews also made safety improvements on the southbound US 101 ramp to northbound I-5 in Tumwater