Washington State Department of Transportation
Northwest Region – 15700 Dayton Avenue – Shoreline, WA 98133 – 206-440-4000

TRAVEL ADVISORY    
May 6, 2025

Contact:            Elizabeth Mount, communications, 206-482-2276

I-5 Mercer Street ramps in Seattle to close nightly May 6-8 for maintenance

SEATTLE – The Mercer Street ramps on Interstate 5 in Seattle will have nighttime closures from 9 p.m. to 6 a.m. Tuesday, May 6 until Friday morning, May 9 for maintenance. 

Closure details:

• The northbound I-5 off-ramp to westbound Mercer Street will close. 
• The left drop lane off-ramp from northbound I-5 to westbound Mercer Street will close.
• The eastbound Mercer Street on-ramp to southbound I-5 will close.

The closures will allow Washington State Department of Transportation tunnel maintenance crews to safely complete tunnel maintenance.

People traveling in the area should seek alternate routes. Real-time traffic information is available on the WSDOT mobile app and the real-time travel map.

Hyperlinks within the release: 

• Mobile app: wsdot.wa.gov/travel/travel-information-phone

• Real-time travel map: wsdot.com/Travel/Real-time/Map/

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WSDOT keeps people, businesses and the economy moving by operating and improving the state's transportation systems. To learn more about what we're doing, go to www.wsdot.wa.gov/news for pictures, videos, news and blogs. Real time traffic information is available at wsdot.com/traffic.