Washington State Department of Transportation Northwest Region – 15700 Dayton Avenue – Shoreline, WA 98133 – 206-440-4000
TRAVEL ADVISORY July 18, 2024
UPDATE: Please note the lane and ramp closures will begin at 9 p.m. which is now reflected in the release below.
Contact: Elizabeth Mount, communications, 206-482-2276
Southbound I-5 to close in downtown Seattle overnight July 19; traffic will use express lanes
SEATTLE – Southbound Interstate 5 through downtown Seattle will close Friday night, July 19, and all southbound traffic will use the express lanes through early Saturday morning.
Beginning at 11 p.m. Friday, July 19, until 6 a.m. Saturday, July 20, all southbound lanes will close near the Seattle Convention Center for scheduled maintenance. Travelers should plan for extra travel time or take alternate routes during this closure.
During the closure, Washington State Department of Transportation maintenance crews will conduct fire system testing under the Seattle Convention Center.
Closure details People traveling overnight Friday, July 19, in Seattle should expect all southbound I-5 mainline lanes to close from the Stewart Street off-ramp to the Spring Street on-ramp (about milepost 167 to 165). All vehicles using southbound I-5 will need to exit at Stewart Street. Crews will close one lane at a time to safely set up the work zone. The first lane will close at 9 p.m. and the full closure will begin at 11 p.m.
Southbound I-5 ramp closures beginning at 10 p.m. will include:
- Eastbound Mercer Street on-ramp.
- Yale Avenue/Howell Street on-ramp.
- Union Street off-ramp.
- James Street off-ramp.
Detour During the closure, the I-5 express lanes will be open for southbound traffic for people traveling through downtown Seattle. The express lane exits in downtown also will remain open. A flammable cargo restriction will be in place. The northbound express lanes will close early to accommodate the southbound mainline closure.
An unplanned flammable cargo restriction is in place for the Mount Baker and the Mercer Island Lid tunnels on I-90. Currently, there is no estimate for when the I- 90 restriction will be lifted. Drivers with flammable cargo will need to seek alternative routes.
People can get real-time traffic information on mobile phones with the WSDOT traffic app and the WSDOT real-time travel map.
Hyperlinks within the release:
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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.
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