WSDOT

Southbound I-5 lane reduction in Seattle, Saturday night to Sunday morning
Three lanes of southbound I-5 between Roanoke and Mercer Street will close from 9 p.m. Saturday, Aug. 8 to 9 a.m. Sunday, Aug. 9. Some lanes may reopen before 9 a.m. The off-ramp to Mercer Street will also close. The I-5 express lanes will be open southbound from 7:45 p.m. Saturday to 1:30 p.m. Sunday.
Check the weekly travel planner webpage and follow @WSDOT_Traffic on Twitter for real-time information.