Eastbound SR 520 off-ramp to Montlake Boulevard in Seattle closed nightly Sept. 21-24 Date: Sept. 21, 2026 to morning of Sept. 25, 2026 Time: 10 p.m. to 6 a.m. nightly Activity details: Ramp closure Impact type: OvernightTrafficNoise Description: Crews will use these nightly closures to continue removing pieces of the old off-ramp to Montlake closed back in June. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project. Traffic: The eastbound SR 520 off-ramp to Montlake Boulevard in Seattle will close for construction nightly from 10 p.m. to 6 a.m. Sept. 21-24. All traffic from I-5 entering eastbound SR 520 during these hours will cross Lake Washington and pay the SR 520 Bridge Toll. Those who do not want to pay the toll or who need to access Montlake from I-5 must use alternate routes. The ramp will reopen at 6 a.m. each of the following mornings. 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 Sept. 28 – Oct. 1, Oct. 5-8 & Oct. 12-15 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 – September 25 (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
