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.
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.
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
WSDOT Project Engineer
Federal Way Street Systems Project Engineer
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