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As part of WSDOT's efforts to remove barriers to fish, this project addresses barriers to fish under SR 302.

There's a lot of work that needs to be done to keep bridges in good working order. This includes regular cleaning and inspection of the Agate Pass Bridge. The bridge, on SR 305, connects Bainbridge Island to the Kitsap Peninsula. We clean the bridge every February to keep dirt and grime from…

This project removed barriers to fish under SR 305 on Bainbridge Island. A culvert was replaced with a new bridge. The work opened almost 1.5 miles of potential habitat on Murden Creek. The creek is a top salmon stream on Bainbridge Island and is a tributary to Murden Cove.

This project removed two existing 270-foot-long, 36-inch-diameter concrete pipe culverts on State Route 305 outside of Poulsbo at the Sam Snyder Creek crossing and replaced them with a single 239-foot-long steel girder bridge. General work activities included: clearing and grubbing, earthwork…

WSDOT built two modern roundabouts on Bainbridge Island at the intersections of SR 305 and Northeast West Port Madison Road/Northeast Seabold Road and SR 305 and Northeast Adas Will Lane. The improvements included curbing and a center median at Agatewood Road Northeast which permanently makes that…

In summer 2021, contractor crews working for WSDOT resurfaced roughly a 25-mile stretch of State Route 4, between Skamokawa and State Route 432 near west Longview, between mileposts 29.77 to 54.98. Project work and highway modifications continued during the 2022 construction season and is now…

State Route 4 is an important connection for Kelso, Longview, and nearby areas in Cowlitz County. It helps people, businesses, and tourists travel between the east and west parts of the county and also leads to the Pacific coast. The area around this route is becoming more urban with increasing…

On Tuesday, Feb. 23, 2021, due to roadway settlement caused by heavy rainfall, both directions of State Route 401 (also known as the Lewis and Clark Trail Highway) between the Astoria-Megler Bridge and Naselle were closed.

In spring 2021, emergency contractor crews were able to…

Contractor crews working for WSDOT installed a 10-foot, corrugated metal pipe under State Route 410 to allow Dry Creek to pass beneath the roadway along its new channel. This is the second part of emergency repairs following a debris flow in fall 2022, which permanently changed the course of Dry…

Starting in early 2023, contractor crews will kick off the much-anticipated project to enhance the SR 411 Cowlitz River Bridge, also known as the A Street Bridge or the PH-10 Bridge. This vital bridge connects the City of Castle Rock to the west side of the Cowlitz River.

The primary…

In summer 2023 contactor crews working for the Washington State Department of Transportation resurfaced a nearly 2.5 mile stretch of SR 432 between milepost 7.19 near Industrial Way and milepost 7.19 near the Cowlitz River, in Longview, WA. Crews also resurfaced several off- and on-ramps along…

On Sunday, July 16, 2023, bridge crews fully closed the SR 433 - Lewis and Clark Bridge, also known as the Rainier Bridge, spanning across the Columbia River between Longview, WA, and Rainier, OR, for four days. The closure aimed to replace the steel expansion joints that allowed the structure to…

Beginning in summer 2022, contractor crews from Thompson Bros. Excavating worked to construct a roundabout in east Vancouver, between the intersection of Fourth Plain Boulevard, also known as SR 500 and Northeast 182nd Avenue. Crash data collected over a five-year timeframe between 2013 to 2017…

This project restored the north/south connection across State Route 500 at the Northeast Stapleton Road/Northeast 54th Avenue intersection in Vancouver by constructing a new pedestrian overcrossing that meets the Americans with Disabilities Act. Restoring access across the highway for people who…

Growth and development in eastern Clark County is contributing to an increase in traffic volumes and traffic related crashes along SR 500 - between the Northeast Robinson Road and Northeast 3rd Street intersections. To keep people moving safely, reduce travel times and crashes and to ensure this…

Washington State Department of Transportation’s contractor, Thompson Bros. Excavating, successfully constructed a new shared-use path on the south side of State Route 500, also known as Northeast Fourth Plain Boulevard, between Northeast 162nd and Northeast 166th avenues, allowing those who bike,…

Previously, oversized freight vehicles had to divert from this section of Mill Plain Boulevard (SR 501) onto city streets due to high points in the roadway and limited overhead clearances. Corridor modifications increased safety along the corridor for all modes of transportation. Improvements…

This project improved safety at the intersection of State Route 503 and Northeast Rock Creek Road by installing a compact roundabout. After reviewing five-years of traffic data that included severe injuries, a fatality, and many cases of property damage, this location was identified for improvement…

This project constructed a pedestrian hybrid signal, creating safer access for pedestrians crossing State Route 503 to and from Prairie High School and the nearby transit stop.

On Saturday, Dec. 23, following the installation of a new 48-inch culvert, stabilizing, and back filling the failure area with rock, and reconstructing the roadway, NW Construction General Contracting, Inc., the emergency contractor has successfully restored two lanes of travel, and lifted the…

Shortly after 9 p.m. Sunday, May 14, 2023, more than 300,000 cubic yards of debris from an adjacent hillside fell approximately 2,000 feet above SR 504 and covered the roadway with rock, mud, ice and water, causing catastrophic damage to the 85-foot Spirit Lake Outlet Bridge at milepost 49.

On Tuesday, July 6, 2021, an over height load was traveling southbound on I-5 when it struck and damaged the SR 506/Toledo-Vader Road overpass that spans over the interstate. Following the bridge strike, WSDOT bridge inspectors determined that the damage was extensive and they closed the overpass…

State Route 507 (SR 507) between the Skookumchuck River Bridge and the Thurston County line within Centralia and unincorporated Lewis County is in need of pavement preservation work to protect the public’s investment in the highway. This work is necessary to keep the roadway in good condition and…

Crews removed and replaced a failing culvert under the highway.

The SR 509 Completion Project in King County is part of the Puget Sound Gateway Program, which also includes the SR 167 Completion Project in Pierce County. Together, these projects complete two of the Puget Sound region’s most critical freight corridors and improve access to I-5, the ports of…

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.

A culvert below State Route 509 west…

WSDOT replaced a culvert that failed beneath SR 510 near Lacey.

Crews will build the three remaining miles of SR 510 between Cullens Road and 170th Street Southeast in Yelm. The new connection, like the previously built Phase 1, is proposed to be a two-lane highway with bicycle and pedestrian facilities.

Crews will build a single-lane roundabout. The improvement will reduce the potential for collisions.

In 2021, contractor crews working for WSDOT replaced the more than 20-year-old worn grid deck on the Montlake Bridge. They also made expansion joint and mechanical repairs so the movable span can continue to operate reliably and meet the growing multimodal traffic demands of northeast Seattle. In…