SR 202 - E Lake Sammamish Parkway to 244th Ave NE - Corridor Planning Study

A map showing the scope of the SR 202 Corridor Study from Redmond to Sammamish

Study Report

Executive Summary (pdf 368 kb)

Study Report (pdf 13 mb)

Study Purpose

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.

To address these concerns, WSDOT studied the SR 202 corridor from East Lake Sammamish Parkway in Redmond and 244th Avenue Northeast in Sammamish. The study helped:

  • Determine priorities for future highway work or transit service adjustments.
  • Develop practical, cost-effective concepts and practices to help improve trip reliability and safety along the corridor.

WSDOT study partners included: Redmond and Sammamish; tribes; King County Metro Transit; King County Roads and Parks; Sound Transit, and the Puget Sound Regional Council (PSRC). Concepts identified in the study were submitted to the Legislature on June 30, 2019.

Community Engagement

Outcomes of this study may change how travelers access SR 202 and get to and from locations along the corridor. With the help of our partners, WSDOT gathered feedback and ideas from local stakeholders and community members based on their experiences of the corridor via an online survey.

The End Result

The information gathered in this study helped WSDOT and its partners develop a list of potential improvements to address corridor needs, like:

  • Improving travel times and managing congestion between East Lake Sammamish Parkway and 244th Avenue Northeast
  • Maintaining connections for people who walk, bike or use transit along SR 202.

Concepts were prioritized based on user feedback, data-driven safety benefits and cost effectiveness. This effort focused on finding smaller fixes and operational adjustments first so they can be implemented as funding becomes available. This may delay or remove the need for additional and more costly future improvements.

Study Timeline

Fall 2018

  • Engage with key stakeholders and nearby communities.
  • Gather corridor user feedback through online survey.
  • Collect and analyze survey data.

Winter 2019

  • Develop practical concepts based on community input.

Spring 2019

  • Share developed concepts with public and gather additional feedback.

Summer 2019

  • Compile and submit study report to the transportation committee.


The Washington State Motor Vehicle Account provided $200,000 for the corridor study. Funding for concepts identified in the study is not currently available.

Your feedback is important

Please contact us with questions or comments about this corridor study:

Thomas Noyes
Senior Transportation Planner