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SR 518 - Des Moines Memorial Drive - Interchange Improvements

A small map showing the location of the new SR 518 off-ramp to Des Moines Memorial Drive in Burien. View a larger map of the project area.

A small photo of eastbound SR 518 in Burien where the new off-ramp to Des Moines Memorial Drive will be constructed. View a larger photo of the future off-ramp site.


December 2017    

  • Contractor crews are building walls for the new off-ramp.
  • Read the latest news release for more information about the project.
  • Sign up for email updates for this and other King County projects.

Why is WSDOT adding a new off-ramp?

WSDOT is working with the city of Burien to add a new two-lane off-ramp from eastbound State Route 518 to Des Moines Memorial Drive to support the planned redevelopment of the Northeast Redevelopment Area (NERA).

The new off-ramp at the intersection of eastbound State Route 518 and Des Moines Memorial Drive will improve freight and vehicle access to the NERA.

The city of Burien plans to redevelop the area into a job-creating commercial center with airport-compatible land uses.

The End Result
The new two-lane off-ramp will cross over 8th Avenue South and join Des Moines Memorial Drive below, creating access to the NERA.

Project Benefits
The new off-ramp will provide direct access for freight and drivers using SR 509 to Des Moines Memorial Drive.

What is the project timeline?
Spring 2017 - Project will be advertised for competitive bidding.
Summer 2017 - Construction begins.
Fall 2018 - Construction will be complete.

Financial Information

The estimated project cost is $12.1 million.
The Washington State Legislature allocated funds to construct this project as part of the 2015 Connecting Washington package.

How can I get more information?
Lisa Van Cise

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