Westbound SR 520 off-ramp to northbound I-5 and East Roanoke Street closed nightly Oct. 5-8, Oct. 12-15 & Oct. 19-22 Date: Oct. 5, 2026 to the morning of Oct. 23, 2026 Time: 10 p.m. to 6 a.m. weeknights Activity details: Street and lane closureRamp closure Impact type: OvernightTrafficNoise Description: Crews will use these closures to facilitate excavation near the off-ramps. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project. Traffic: The westbound SR 520 off-ramp to both northbound I-5 and East Roanoke Street will close for construction nightly from 10 p.m. to 6 a.m. on select weeknights beginning Monday, Oct. 5, until the morning of Friday, Oct. 23. During these closures, all westbound SR 520 traffic that remains on westbound SR 520 past the Montlake Blvd. exit will detour to southbound I-5. In addition, a single right lane on westbound SR 520 between Montlake and I-5 will also close during these dates and hours. Closures Eastbound SR 520 off-ramp to Montlake Boulevard in Seattle closed nightly Sept. 21-24 Eastbound SR 520 between I-5 and Montlake Boulevard closed Oct. 2-5 Westbound SR 520 off-ramp to northbound I-5 and East Roanoke Street closed nightly Oct. 5-8, Oct. 12-15 & Oct. 19-22 Boyer Ave. E. between E. Roanoke St. and Everett Ave. E. closed nightly Oct. 12-15 Long-term closures Weekday parking restrictions near Fuhrman Ave. for staging site begin June 15 Boyer Avenue East reduced to a single lane between East Roanoke Street and Everett Avenue East July 20 – Oct. 23 (excluding weekends) Activities Vibratory casing installation in Portage Bay schedule: Phase of work is complete Contact Info Email: sr520bridge@wsdot.wa.gov 24-hour construction hotline: 206-319-4520
