SR 518 - Des Moines Memorial Drive - Interchange Improvements

Project news

  • The new eastbound SR 518 off-ramp opened to traffic at 8 p.m. on Thursday, Jan. 10.
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Why is WSDOT adding a new off-ramp?

WSDOT is working with the city of Burien to add a new two-lane off-ramp (pdf 135 kb) from eastbound SR 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 SR 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.

Needs & Benefits

The new off-ramp will provide direct access for freight and drivers on SR 518 to Des Moines Memorial Drive.


  • Spring 2017: Project was advertised for competitive bidding.
  • June 2017: Project was awarded to Graham Contracting, Ltd.
  • July 2017: Construction began.
  • Jan. 10, 2019: The new off-ramp opened to traffic. 


Financial Data for PIN 151801K
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $21
CWA $13,455
Total $13,476


Nicole Daniels
WSDOT Communications