Skip Top Navigation

SR 520 Multi-modal Corridor Planning Study from I-405 to Avondale Road - Complete April 2013

Project Status - Complete

WSDOT's Urban Planning Office completed a study of State Route 520 between Interstate 405 in Bellevue and Avondale Road in Redmond. This effort produced a list of multi-modal recommendations addressing safety and mobility issues along SR 520.

The study analyzed existing and future transportation conditions of the study corridor. The final report includes a traffic and mobility analysis, safety analysis, an environmental overview, recommendations for near-, mid-, and long-term improvements, and planning level cost estimates for the recommendations.

Due to limited state funding, the recommendations in the study will need to compete for funding with other proposed improvements around the state based on performance outcomes.

How You Benefit
Cross GlyphImproves Safety
The study team identified potential projects to improve safety and mobility on SR 520. These projects could be built over the next 20 years as funding becomes available.

Partnerships & Cooperation
The study team worked with a group of Stakeholders to identify safety and mobility problems along the corridor and develop recommendations to address those problems. The Stakeholders’ group was comprised of representatives from:

• City of Bellevue
• City of Kirkland
• City of Redmond
• City of Sammamish
• Group Health Cooperative
• Kemper Development
• King County Metro Transit
• King County Roads
• Microsoft
• Puget Sound Regional Council
• Sound Transit
• Wright Runstad & Company

Tribes and other affected and interested groups were also invited to participate in the study.


This study was funded through the following source:

State - $500,000

Contact Us
How can I get more information?

Richard Warren
WSDOT Urban Planning Office
401 Second Avenue South, Suite 300
Seattle, WA 98104

back to top