I-5 - 179th St. Interchange - Interchange Improvements - Project map

I-5/179th Street - Interchange - Interchange Improvements - project map

Originally built in the early 1960's, the Northeast 179th Street Interchange is in need of upgrades and safety improvements to bring the interchange up to today’s design standards. With anticipated growth in Clark County, the existing interchange configuration is not expected to be able to accommodate future traffic volumes.

WSDOT is currently developing the scope of the interchange improvements. The interchange design will not begin until 2023; however, these transportation system improvements will be necessary to support the future growth and development in Clark County. More importantly, this project will improve traffic flow and reduce delays that will occur if nothing is built.