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Learn about current transportation network improvement and preservation activities throughout the state.

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344 results

Project

SR 169 Green River Bridge - Emergency - Complete October 2025

Timeline: September-October 2025
  • Road
  • Completed
  • King County
Repairs are complete on the SR 169 Green River Dan Evans Bridge; the bridge reopened Oct. 14, 2025.

During a scheduled inspection on Aug. 4, 2025, bridge preservation engineers found cracking and advanced corrosion on the stringers beneath the northbound and southbound lanes of the…
Project

SR 169 – Rock Creek, Ginder Creek and unnamed tributaries – fish passage

Timeline: 2020-2028
  • Road
  • Pre-construction
  • King County
Beginning as early as August 2026, WSDOT will begin installing five new fish-passable structures to carry creeks and tributaries beneath SR 169 in Black Diamond.

During the 2026 construction season, this project will correct two culverts near Jones Lake that block fish from swimming…
Project

SR 17 Moses Lake Vicinity Paving and ADA (Complete Aug. 2024)

Timeline: April 2024-July 2024
  • Road
  • Completed
  • Grant County
A section of roadway on SR 17 between Patton Boulevard and the Interstate 90 interchange is due for resurfacing. Pedestrian facilities at intersections along the way will also be updated to the standards set by the Americans With Disabilities Act.
The project will start with pedestrian…
Project

SR 17 Soap Lake to Lake Lenore Unstable Slopes - Complete September 2024

Timeline: February 2024-October 2024
  • Airport
  • Completed
  • Grant County
The purpose of this project was to remove rock from the slopes along SR 17 between Soap Lake and Lake Lenore, just north of Lake Lenore Caves Road, as well as to install slope protection and stabilization measures to prevent future rockfall. Work occurred on eight slopes along SR 17.
This…
Project

SR 17/Cunningham Road Intersection- Safety Improvement

Timeline: Spring 2026-summer 2026
  • Road
  • Construction
  • Adams County
The project will build a roundabout to replace the current two-way stop intersection at the corner of Cunningham Road and State Route 17 in Adams County near Othello.
Project

SR 18 EB/ C St SW Vic to Green River – Paving & Joint Replacement — Complete May 2026

Timeline: Spring 2025 - Spring 2026
  • Road
  • Completed
  • King County
This project paved roughly three miles of eastbound State Route 18 from C Street Southwest to Green River. Crews working for WSDOT rehabilitated the existing roadway surface, deteriorated bridge decks and joints of the C Street Southwest bridge and five eastbound on- and off-ramps. As a result of…
Project

SR 18 SE 231st St Vic to Tiger Mountain Vic - Paving

Timeline: 2026-2028
  • Road
  • Pre-construction
  • King County
This project will resurface the eastbound and westbound lanes of State Route 18 from Southeast 231st Street to the Tiger Mountain summit to extend the pavement service life. Crews will grind and inlay new Hot Mix Asphalt (HMA) on the road, perform pavement repair, traffic loop replacement, striping…
Project

SR 18, Issaquah Hobart Rd to Deep Creek Vicinity – Widening & Fiber

Timeline: 2018 - 2035
  • Road
  • Pre-construction
  • King County
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…
Project

SR 18/Preston Mill Park Mitigation

Timeline: Summer 2027 - Spring 2028
  • Road
  • Pre-construction
  • King County
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…
Project

SR 18/Unnamed Tributary to Big Soos & Soosette Creek – Fish Passage

Timeline: Fall 2026 - Winter 2029
  • Road
  • Pre-construction
  • King County
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…
Project

SR 194 – Busch Bridge at Port of Almota - Bridge Repair - Complete June 2026

Timeline: February 2026 - June 2026
  • Road
  • Completed
  • Whitman County
This project will demolish and rebuild the Busch Bridge located at the Port of Almota on State Route 194 in Whitman County. The bridge has been reduced to a single lane since 2023 due to deterioration of the bridge deck.
Project

SR 20 - Campbell Lake Road - Intersection Improvements

Timeline: Summer 2026 - fall 2027
  • Road
  • Pre-construction
  • Skagit County
The Samish Indian Nation is partnering with WSDOT and Skagit County to improve safety and access at the intersection of SR 20 and Campbell Lake Road. The project is funded by the Samish Indian Nation.

Beginning in June 2026, the SR 20 Campbell Lake Road Intersection Improvements…
Project

SR 20 Boon Road to Ault Field Vicinity Paving & ADA Compliance - Completed January 2024

Timeline: July 2023 - September 2023
  • Road
  • Completed
  • Island County
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…
Project

SR 20 West Fakkema Road – Intersection improvements

Timeline: Spring 2025 - Spring 2026
  • Road
  • Construction
  • Island County
Contractors working on behalf of WSDOT built a compact roundabout at the intersection of State Route 20 and West Fakkema Road. This intersection improvement will help with both mobility and safety.
Project

SR 20 – S. Fork Mill Creek Road to Tiger Paving - Complete October 2024

Timeline: August 2024 - September 2024
  • Road
  • Completed
  • Pend Oreille County
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.
Project

SR 20/Burlington to Sedro-Woolley - Corridor Improvements

Timeline: Fall 2025 to Winter 2027
  • Road
  • Pre-construction
  • Skagit County
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,…
Project

SR 20/Kearney St I/S – Roundabout – Completed June 2024

Timeline: September 2023 - June 2024
  • Road
  • Completed
  • Jefferson County
This project took the existing intersection on State Route 20 at Kearney Street in Port Townsend and converted it into a single-lane roundabout.
Project

SR 20/North Cascades Highway Emergency Repairs - Completed June 2026

Timeline: December 2025 to June 2026
  • Road
  • Construction
  • Skagit County
  • Whatcom County
The North Cascades Highway fully reopened Sunday, June 14.

Beginning May 5, 2026, work began on the first of two emergency repair contracts to reopen SR 20 as quickly as it is safe to do so. The first project, which focused on slope stabilization and debris removal at the site of the…
Project

SR 20/Olson Creek and Unnamed Tributary to Skagit River - Fish Passage - Completed Spring 2025

Timeline: March 2023 - May 2025
  • Road
  • Completed
  • Skagit County
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…
Project

SR 20/UNT to Coal Creek - Fish Passage

Timeline: Spring 2024 to Fall 2025
  • Road
  • Construction
  • Skagit County
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…
Project

SR 202 Boalch Ave NW to I-90 & Overflow Channel Bridge - ADA Compliance

Timeline: 2026-2028
  • Road
  • Pre-construction
  • King County
This project will resurface the northbound and southbound lanes of State Route 202 from Boalch Ave Northwest to I-90 to extend the pavement service life. The SR 202 bridges over the overflow channel and South Fork of the Snoqualmie River have decks that are deteriorating and are nearing the end of…
Project

SR 202 Fall City/Snoqualmie River erosion repair

Timeline: June 2026-August 2026
  • Road
  • Pre-construction
  • King County
Just east of the SR 202/SR 203 roundabout near Fall City, the Snoqualmie and Raging rivers join together next to SR 202. Major storms in December 2025 and March 2026 significantly eroded the riverbank at milepost 22. This project will rebuild the damaged road embankment by placing a mix of woody…
Project

SR 202 Skunk Creek and SR 203 Unnamed Tributaries to Snoqualmie River - Fish Passage - Complete Fall 2025

Timeline: Spring 2023 - Fall 2025
  • Road
  • Completed
  • King County
This project removed barriers to fish passage at four locations where culverts prevented fish from swimming upstream.

Those four locations are: An unnamed tributary to Horseshoe Lake at SR 203 and Northeast Carnation Farm Road north of Carnation; Skunk Creek and an unnamed tributary…
Project

SR 202/Evans Creek – Fish Passage

Timeline: Fall 2026 - Spring 2028
  • Road
  • Pre-construction
  • King County
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…
Project

SR 202/Mud Creek to Snoqualmie River - Fish Passage Project

Timeline: May 2023 - December 2029
  • Road
  • Pre-construction
  • King County
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…
Project

SR 202/Sammamish Creek fish passage - Complete August 2025

Timeline: July 2024 - Fall 2024
  • Road
  • Completed
  • King County
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…
Project

SR 203 / NE 124th St to Skykomish River – Paving with Exceptions Project

Timeline: Spring 2026 – Winter 2026
  • Road
  • Not started
  • King County
The Washington Department of Transportation will be working on a preservation project to repair and smooth the surface of State Route 203 between Duvall and Monroe. This work is necessary to prevent further and more expensive damage to the roadway.

The work covers a nearly 11-mile…
Project

SR 203/High Rock Rd & 203rd St SE – Intersection Improvement - Complete May 2025

Timeline: May 2024 - May 2025
  • Road
  • Completed
  • Snohomish County
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.
Project

SR 203/Slough Bridge Vic to Kelly Rd NE Vic-Stormwater Retrofit - Complete May 2026

Timeline: Spring 2025 – Summer 2026
  • Road
  • Completed
  • King County
This project installed 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.
Project

SR 204/Unnamed Tributary to Ebey Slough Fish Passage

Timeline: Spring 2027 - Winter 2031
  • Road
  • Pre-construction
  • Snohomish County
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…

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