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SR 503 - 4th Plain/ SR 500 Intersection - Project Specifics

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Public involvement

Your thoughts and opinions are important to us. WSDOT will continue to inform the public of any future public involvement through this Web page, the SW Region's Public Involvement page, and through the local media.

Increasing safety is our priority

Safety is our first priority. By adding a right turn lane at this busy intersection, safety is improved. The right turn lane will decrease the number of vehicles backing up at the intersection, and associated rear-end type collisions. Additionally, a median curb will be installed on SR 503 between Fourth Plain Blvd. and 65th Street to reduce the likelihood of head-on collisions and traffic conflicts in this area.

Environmental protection

WSDOT makes every effort to assess and minimize negative impacts from highway improvement projects. The necessary environmental analysis will begin in 2008. This analysis will document the project’s environmental impacts (natural, ecological, societal, in order to guide final design and construction. This project will provide mitigation for any adverse impacts that may occur to the environment.

For environmental information specific to this project, please contact Barb Aberle at (360) 905-2186, or e-mail

Will this project impact tribal resources?
At WSDOT we seek to address the concerns of the tribal nations using the process outlined in Section 106 of The National Historic Preservation Act and the WSDOT Tribal Consultation Policy adopted in 2003 by the Transportation Commission as part of the WSDOT Centennial Accord Plan.

For more information visit our WSDOT Tribal Liaison website.