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At the request of the Washington State Legislature, WSDOT prepared toll feasibility studies for SR 167 and SR 509 to examine tolling and construction options for the new SR 167 and SR 509 corridors. The studies provided insights into:

• Potential funding and corresponding

The TRIP will help decision-makers prioritize immediate and long-term investments to address climate and natural hazards such as flooding, wildfire, sea-level rise, landslides, earthquakes and more. These hazards could disrupt transportation networks and make it difficult for our communities to

US 101 connects Sequim, a city in Clallam County, with the rest of western Washington. It is a vital link for residents, businesses and visitors. The pre-design study identified roadway improvements focused on safety, access and improving travel times using the

Two segments of US 101 are scheduled to be repaved. Segment one is near Port Angeles from East Kolonels Way to Shore Road. Segment two spans Carlsborg and Sequim from Kitchen-Dick Road to Simdars Road. 

This pre-design study completed a

US 101 through Raymond is a five-lane road, with two lanes in each direction and a center lane for left turns. The width of US 101 makes crossing difficult for those walking, biking and rolling. The roadway has more lanes than needed for current traffic volumes and for what is expected in the

Peabody Creek runs through downtown Port Angeles under Lincoln Street between First Street (US 101) and the outlet near the city pier. This culvert prevents salmon from accessing valuable habitat upstream. During the pre-design, WSDOT will look at alternatives to the creek's alignment.

The Town of Naches, the Yakima Valley Conference of Governments (YVCOG) and WSDOT are working together to provide a safe, reliable and effective transportation network for drivers, cyclists and pedestrians along the US 12 corridor in Naches, Washington.

The study area included the US 12

This pre-design sought feedback on a roundabout concept for the intersection of US 12 and Old Highway 9 in southwest Thurston County.

In April 2025, WSDOT met with local agencies. In May 2025, WSDOT conducted an online open house. The purpose of this engagement was to gather feedback about

The US 195 Corridor Crash Analysis is a traffic safety study that focuses on:

• Identifying the most common circumstances or trends that contribute to serious and fatal injury crashes along the corridor.
• Identifying low-cost solutions or countermeasures most likely to

Create a more resilient and connected network for local trips between Hatch Road and I 90.

Improve safety for all and preserve capacity on US 195 for regional trips.

Extend the life of the US 195/I-90 interchange.

Provide more connections for walking, biking, and using

The population of Snohomish County has more than doubled since 1980 and is expected to gain another 200,000 residents by 2035. This growth will add pressure to the county’s high-traffic routes, including the US 2, SR 204 and 20th Street Southeast interchange, which already experiences severe

The study helps identify transportation issues, environmental concerns, community values and economic goals early in project planning. A detailed environmental review process follows a PEL study, as required by the national and state environmental policy acts. Information gathered in the PEL

The US 2 West Plains Sub-area Management Plan Phase 1, refines previous studies that have been completed in the West Plains area. This "live" study addresses the mobility gaps (congestion) that have already been identified along this 8-mile, east-west corridor between the US 2/ I-90