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I-5 - S 320th Street Off-Ramp Improvements

WSDOT worked with the city of Federal Way to make improvements to the southbound I-5 off-ramp to South 320th Street in Federal Way. Crews widened the ramp from three to five lanes, upgraded lighting, modified signal timing and built a retaining wall.

How You Benefit
Cross GlyphImproves Safety
Widening the ramp is expected to improve safety by preventing traffic from backing up onto southbound I-5, which can lead to collisions. New lighting, signing, guardrail and a crosswalk also will improve safety in the area.
Car GlyphRelieves Congestion
The wider ramp is expected to ease backups from the high number of vehicles exiting from southbound I-5 to South 320th Street.

Partnerships & Cooperation
WSDOT teamed up with the city of Federal Way to identify improvements and construct the wider ramp.


  • $3.2 million: Federal grant
  • $1.9 million: City of Federal Way funds
  • Total funding from all sources: $5.1 million

Contact Us
Aleta Borschowa
WSDOT Project Engineer

Mike Murphy
WSDOT Communications

Brian Roberts
Federal Way Street Systems Project Engineer

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