Southbound I-5 to close for maintenance work overnight Friday, July 29

From WSDOT

Drivers planning to use southbound Interstate 5 through downtown Seattle overnight Friday, July 29, should prepare for a full closure of the interstate and prepare to exit at the Stewart Street / Denny Way off-ramp. A signed detour will be in place and the I-5 express lanes will be open southbound.

During the closure, Washington State Department of Transportation maintenance crews will be conducting routine maintenance and testing of the fire suppression system under the Washington State Convention Center.

Closure details

Friday night, July 29, to the morning of Saturday, July 30

• Drivers must exit southbound I-5 at the Stewart Street/Denny Way off-ramp beginning at 11:59 p.m. until 5 a.m. A signed detour will guide drivers to Stewart Street, 5th Avenue and Spring Street where they can return to I-5.

• The Mercer Street and Yale Avenue North/Howell Street on-ramps to southbound I-5 will be closed from 11:59 p.m. to 5 a.m. Signed detours will be in place.

• The I-5 express lanes will be open in the southbound direction starting at 11:30 p.m. Oversized loads should use the express lanes. 

Puget Sound area drivers can get real-time traffic information on their phone with the WSDOT traffic app, by tracking the WSDOT traffic Twitter feed, and get advanced information from the Seattle Area Construction page.