Find detailed reviews about specific areas of Washington’s transportation system in our collection of planning studies.
The Fort Lewis Weigh Station located along northbound Interstate 5 near DuPont in Pierce County is in need of updating. Freight traffic in the area experiences recurring congestion and delay due to high volumes from both freight and commuter traffic. The weigh station was built in 1969 and in
The Northwest Region Mount Baker Area is leading this effort to address several mobility challenges along segments of the I-5 corridor within the urban area of Bellingham (MP 250 to MP 258). Congestion occurs regularly during peak travel at the I-5 interchanges and on the connecting regional
In Spring 2022 the Legislature initiated the Move Ahead Washington funding package to create planning and environmental linkages studies for Interstate 5. This work will ultimately create a master plan for the critical I-5 corridor that meets current and future transportation needs, and reflects
The "Planning and Environmental Linkages Study" (PEL study) built upon the goals and strategies outlined in the original 2020 Corridor Study. This PEL Study represents a collaborative and integrated approach to transportation decision-making that:
- Considers environmental, community
People who live, work or travel in south Pierce County experience delays on state highways as a result of population growth and development. This study will address key priorities of improving safety, connectivity and reducing delays for all users of transportation facilities. WSDOT will develop
The pre-design study looked at the signalized intersection on SR 105, South Boone Street, at West Harriman Street. The aging traffic signal at this intersection was last replaced in 1982 and is in need of replacement. The pre-design study conducted stakeholder and public outreach to examine
Currently, pedestrian access along State Route 142 is limited for people who walk, bike or roll alongside the highway. With input from community members, elected officials and stakeholders, we will develop a plan to improve accessibility for all modes in the community of Klickitat.
The study identifies corridor strategies and solutions to address congestion and traffic operations along State Route 16 between the Tacoma Narrows Bridge and Gorst, as well as portions of SR 3 and SR 304 in Pierce and Kitsap counties.
A study was completed of SR 160 between Phillips Road and Mayvolt Road Southeast/Lake Valley Road Southeast in Kitsap County. The study identified intersection control strategies that have the potential to reduce the frequency and severity of crashes at the intersection of SR 160 (SE Sedgwick
State Route 162 is an important north-south link through the Orting Valley community and the surrounding area of southeast Pierce County. The area experiences a high level of growth and development resulting in peak hour congestion that places demands on the highway system. The study identified
A pre-design study was conducted at the intersection of SR 166 and Bay Street, Bethel Avenue and Maple Street in Port Orchard. The existing traffic signal at this intersection has reached the end of its useful life. This in-depth review included collaboration with local business owners, City of
The Puget Sound region is thriving and attracting large population and employment growth. This growth increases strain on our transportation infrastructure and services, resulting in increased traffic congestion and increased needs for maintenance and preservation. There is a need to move people
The pre-design study looked at the signalized intersections on SR 20 at Discovery Road and Kearney Street. The traffic signals at these intersections are in need of replacement. The study examined replacing the traffic signals with compact roundabouts.
The SR 20 Skagit River O’Brian Reach Feasibility Study study area is located along SR 20 near Rockport at milepost 101 (near Cascade Farms). The purpose of the study is to identify a project concept that will:
- Reduce erosion and flood damage to SR 20 during frequent flood events,
State Route 202 is an important east-west link for King County communities like Woodinville, Redmond, Sammamish, Fall City and North Bend. Thanks to growth and development, traffic on SR 202 has increased in the last decade, contributing to longer travel times for commuters and freight.
We are conducting two corridor studies along SR 202. One study will focus on safety concerns between 244th Ave NE to 324th Ave SE, and the second study will cover community needs between 324 Ave SE and SR 203 in Fall City.
Both studies will document strategies to improve operations,
The study will collaboratively address the transportation network performance, accessibility and safety gaps to support local communities and the traveling public in the East Valley area. The study will identify ranked strategies to increase mobility and transportation alternatives for all modes
WSDOT routinely reviews rural intersections on the state highway system to find ways to reduce potential crashes. We look for locations that are at the highest risk for severe crashes.
This project will construct single-lane roundabouts on East Agate Road and East Pickering Road in Mason
SR 302, an important east-west link for Key Peninsula communities, has been the subject of a corridor study designed to conform with the decision making requirements of the National Environmental Policy Act (NEPA). This area of the state's highway system located in Pierce and Kitsap counties has
Routine reviews of rural intersections on the state highway system are completed by WSDOT to find ways to decrease the likelihood of crashes. A safety plan is developed to reduce crash potential, operating speed and conflict points. This project will construct a single-lane roundabout on SR 302
The City of Bremerton and WSDOT completed a comprehensive planning study of the SR 303 (Warren/Wheaton) corridor. Using the Practical Solutions approach, the study will look at the corridor from Burwell Street to NE Fairgrounds Road, particularly the segments within city limits. The study will
The resulting long-term plan will help determine the type of transportation network SR 503 should support and how SR 503 interacts with surrounding land uses.
WSDOT routinely reviews rural area intersections on its state highway system to find ways to reduce potential crashes. As a result of this review, we will replace the existing stop signs at three intersections in Pierce County with single-lane roundabouts. These roundabouts fit within the
To reduce potential crashes, we complete routine reviews of rural area intersections on the state highway system. As a result of this review, we will construct a roundabout on SR 510 at the intersection of McAllister Court SE/Rockcress Drive SE and remove the existing stop signs. This roundabout
SR 512 is an important east-west link through Pierce County that connects the cities of Lakewood and Puyallup. This highway provides a vital connection between Interstate 5 and SR 167 for residents, businesses and visitors. The pre-design study will identify potential roadway improvements and
SR 516 through Covington is a heavily traveled road that serves as the community's main commercial route. As the area grows, the demand on the roadway is expected to increase. WSDOT is working with the city of Covington to consider multimodal access, safety, environmental and performance
Through this study, we determined priorities for future highway work or transit service adjustments. and developed practical, cost-effective concepts to help improve trip reliability and safety along the corridor. Our study partners included Burien, Des Moines, SeaTac, Tukwila, tribes, King
State Route 532 is the primary east-west corridor to Interstate 5 for the city of Stanwood, Camano Island and unincorporated areas of Snohomish County. Over the last several years, this area has experienced increased levels of vehicular and commercial truck traffic during peak travel periods. In
State Route 542, Mount Baker Highway, connects communities in eastern Whatcom County with the rest of Washington State while also providing a gateway to outdoor recreation and tourism opportunities near Mount Baker. This route also acts as an economic corridor transporting over 3 million tons
WSDOT is replacing the existing two-way stop at the intersection of State Route 702 and 8th Avenue South with a modern roundabout. The intersection currently has stop control on the northbound and southbound legs, and a span wire mounted, four-head flashing beacon. This project will remove the