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This project is paving roughly three miles of eastbound State Route 18 from C Street Southwest to Green River. Crews working for WSDOT will rehabilitate the existing roadway surface, deteriorated bridge decks and joints of the C Street Southwest bridge and five eastbound on and off-ramps. Once…

SR 18 is a crucial highway connecting the south Puget Sound area with I-90, the state's main east-west route. SR 18 has experienced frequent congestion and collisions for decades.

WSDOT received construction funding from the 2022 Move Ahead Washington transportation package and…

WSDOT will construct a wetland mitigation site inside the Preston Mill Park/Jim Ellis Memorial Regional Park. Project work includes creating and improving wetlands and sensitive area buffers, grading, stream connections, new access roads, plantings, and other improvements. Most work will take…

As part of WSDOT’s fish passage program, we will remove two culverts that do not allow fish to pass and replace them with fish-passable structures along Unnamed Tributary to Big Soos Creek and Unnamed Tributary to Soosette Creek at State Route 18 in Auburn. The new structures have the potential to…

The Samish Indian Nation is partnering with WSDOT and Skagit County to develop a practical solution to improve safety and access at the intersection of SR 20 and Campbell Lake Road.

WSDOT made roadway improvement across three sections of a 12-mile stretch of State Route 20 in Island County. The work included grinding off the old pavement, laying new asphalt and installing new pavement markings. This project will extend the life of the existing pavement and create a smoother…

This project removed a metal pipe under the roadway and replaced it with a fish passable structure to improve fish passage for Red Creek and Unnamed Tributary under State Route 20. The work took place between Helmick Road (milepost 68) and Sims Road (milepost 69), east of Sedro-Woolley.
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Contractors working on behalf of WSDOT will build a compact roundabout at the intersection of State Route 20 and West Fakkema Road. This intersection improvement will help with both mobility and safety.

This project will rehabilitate approximately 11.25 miles of SR 20 in Stevens and Pend Oreille Counties from S. Fork Mill Creek Road to Tiger by removing the surface of the existing pavement and paving with Hot Mix Asphalt (HMA) to create a smoother ride and preserve the roadway for years to come.

WSDOT is currently working on design plans to address safety concerns along the State Route 20 corridor between Sedro-Woolley and Burlington. The intent of this project is to improve safety along this busy stretch of highway with the construction of intersection roundabouts, pedestrian crossings,…

This project took the existing intersection on State Route 20 at Kearney Street in Port Townsend and converted it into a single-lane roundabout.

Contractor crews working on behalf of WSDOT replaced the culvert crossings under State Route 20 at an unnamed tributary to Skagit River (milepost 94) and Olson Creek (milepost 105) in Marblemount. The old culverts were barriers to fish passage and were replaced with structures that will allow…

This project will replace the existing 6-foot concrete box culvert with a new 20-foot-wide fish passage structure under State Route 20, located between Coal Creek Lane and Hoehn Road (milepost 70), east of Sedro-Woolley. This upgrade is part of WSDOT’s ongoing efforts to improve fish passage and…

As part of the state's fish recovery efforts, WSDOT has made it a priority to reconnect waterways where roads act as barriers. In Western Washington, that means replacing culverts and building hundreds of bridges and structures beneath state highways by 2030 to open more habitat for native and…

This project will remove a fish passage barrier along Evans Creek at State Route 202 just west of 236th Avenue Northeast near Sammamish. Contractor crews working for WSDOT will remove an existing 6-foot box culvert and fish ladder and replace it with a fish-passable structure. This new structure…

This project will remove the fish barrier on State Route 202 just east of Fall City at Mud Creek. The project will also improve the safety and reliability of SR 202 by addressing the need for frequent emergency maintenance and channel dredging at the crossing due to sedimentation and flooding of…

In July 2024, WSDOT began replacing two culverts near the intersection of State Route 202 and Northeast 124th Street between Redmond and Woodinville with a single culvert. Two creeks in the area — an unnamed tributary of the Sammamish Creek and High School Creek — were realigned to merge with the…

Beginning in May 2024, contractors working on behalf of WSDOT built a unique compact roundabout at the intersection of SR 203, High Rock Road and 203rd Street Southeast to improve both mobility and safety between Monroe and Duvall.

This project will install vegetative filter strips on the side of State Route 203 just north of Fall City (milepost .69) and at Northeast 77th Street (milepost 7.69). The vegetative filter strips will treat stormwater running off the roadway to help protect nearby wetlands and sensitive areas.

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…

The Washington State Department of Transportation and contractor crews are building new lanes for drivers to merge on and off SR 240 safely. Crews will also install a noise wall along the south portion of SR 240 along the Moon River RV Resort, and update traffic signals, pedestrian crossings,…

This project removed the weight restrictions and restored the structural integrity of the Mabton area bridges. The slough bridge was replaced, and the bridge over the Yakima River was retrofitted and repaired.

This project will remove and replace a failed culvert and reconstruct the existing roadway embankment approximately two miles north of Hunters on State Route 25 that failed in April of 2023 after a major rainfall.

This project will rehabilitate the concrete bridge decks on a pair of bridges in Adams County. The first bridge is located on eastbound I-90 that crosses over SR 21 approximately 15 miles west of Ritzville. The second structure is located on SR 26 that crosses over an abandoned railroad just…

This project improves safety along State Route 26 in Whitman County by installing shoulder rumble strips. There is a documented history of fatal and serious injury, single-vehicle, run-off-the-road crashes at these locations. Engineering analysis indicates that the installation of shoulder rumble…

The project installed a compact roundabout at the intersections of SR 26 and First Avenue. The I2 crash prevention program for systemic treatment at intersection selected this location for a compact roundabout due to existing crash patterns. The roundabout was operational by October 2025, but the…

This project will create three truck climbing lanes, or passing lanes, for vehicles who travel along SR 26 between Dusty and Colfax in Whitman County. One climbing lane will be built westbound and two will be built eastbound on SR 26. The Washington legislature approved the addition of a fourth…

This project will create a fourth truck climbing lane, or passing lane, for vehicles who travel along SR 26 between Dusty and Colfax in Whitman County. Three climbing lanes were constructed on this section of SR 26 between 2022 and 2023. The Washington legislature approved the addition of a fourth…

This project will rehabilitate roughly 6 miles of SR 270 from Bishop Blvd. to the Idaho State Line in Whitman County. Once the project is completed by removing the surface of the existing pavement, repairing portions of the pavement through crack sealing, paving with Hot Mix Asphalt (HMA), and…

This project improved safety by constructing a roundabout at the intersection of SR 28 and White Trail Rd. west of the City of Quincy.