SR 160 Planning Study

SR 160 Long Lake Rd SE Planning Study

SR 160 Long Lake Road Planning Study Map

Thank you for your feedback during our Open House on October 11. 

Working closely with local stakeholders, and hearing directly from residents during two open house meetings, the Washington State Department of Transportation narrowed the preferred alternative to a roundabout at the intersection of Southeast Sedgwick Road (State Route 160) and Long Lake Road. We are currently in the process of putting together the study report.  

Planning Study Description

State Route 160 (Sedgwick Road) is an important east-west connection that provides primary access between State Route 16 and the Southworth Ferry. SR 160 also serves local drivers, and regional commuters.

WSDOT is studying SR 160 between Phillips Road and Mayvolt Road Southeast/Lake Valley Road Southeast. The purpose of this study is to develop intersection control strategies that have the potential to reduce the frequency and severity of crashes at the intersection of SR 160 (SE Sedgwick Road) Long Lake Road Southeast.

This section of highway is classified as a rural two lane highway. The existing highway has narrow shoulders, and it has numerous intersecting streets and driveways. Drivers using Long Lake Road SE wishing to enter onto SR 160 currently have a stop sign.

WSDOT has examined five possible alternatives for this intersection:

  1. Roundabout at intersection of SR 160 and Long Lake Road Southeast. 
  2. Roundabouts at the intersection of SR 160 and Phillips Road and the intersection of SR 160 and Mayvolt Road Southeast/Lake Valley Road Southeast. In addition, the intersection of SR 160 and Long Lake Road Southeast would limit traffic to right-in and right-out only. 
  3. New traffic signal at the intersection of SR 160 and Long Lake Road Southeast. 
  4. Construct bridge over SR 160 with ramps.
  5. Speed limit reduction. 

Needs & Benefits

The Long Lake Road SE intersection has been identified as a location in need of safety analysis due to the type, frequency and severity of crashes. Using WSDOT's performance-based approach to transportation decision-making, WSDOT will evaluate and document the roadway conditions on the state transportation system in the study area.

Challenges

WSDOT will work with the community to identify and recommend suitable strategies to meet current and future needs.

The End Result

WSDOT will produce a recommended alternative to address the needs at the intersection of State Route 160 and Long Lake Road Southeast. The study report will guide WSDOT moving forward in identifying future solutions.

Funding

Funding for this study is provided by the Dedicated Federal Highway Safety Improvement Program ($192,000) and the Washington State Motor Vehicle Account ($8,000). A total of $200,000 was allocated during the 2015-2017 biennium.

Timeline

Fall 2016

  • Data collection
  • Develop scope of work
  • Preliminary data analysis

Spring 2017

  • Stakeholder communication
  • Community engagement

Summer 2017

  • Stakeholder communication
  • Community engagement
  • Data analysis
  • Safety analysis
  • Finalize options

Fall 2017

  • Complete study report
  • Publish report

Contact

Dennis Engel, Planning Manager
360-357-2651

Yvette Liufau, Study Lead
360-357-2738

Claudia Bingham Baker, Communications Manager
360-357-2789