Westbound SR 520 closed between Montlake Boulevard and I-5 Nov. 13-16 Date: Nov. 13, 2026 to Nov. 16, 2026 Time: 11 p.m. Friday to 5 a.m. Monday Activity details: Full highway closureHigh-impact construction Impact type: Around-the-clockTrafficNoise Description: Crews will use this closure to repair expansion joints on the mainline and shift the westbound off-ramp to northbound I-5 north. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project. Traffic: Westbound SR 520 between Montlake Boulevard and I-5 in Seattle will close for construction beginning at 11 p.m. on Friday, Nov. 13, until 5 a.m. on Monday, Nov. 16. During this time, all westbound SR 520 traffic crossing Lake Washington will exit at either Montlake or Lake Washington boulevards. Travelers who want access to I-5 from westbound SR 520 will need to use alternate routes. Eastbound SR 520 and the SR 520 Trail are not affected by this work and will remain open. Closures Westbound SR 520 off-ramp to northbound I-5 and East Roanoke Street closed most weeknights Eastbound SR 520 off-ramp to Montlake Boulevard closed nightly Nov. 7 and 8 East Roanoke Street alley closed between East Edgar Street and Boyer Avenue East Oct. 28-30 and Nov. 2-6 Westbound SR 520 closed between Montlake Boulevard and I-5 Nov. 13-16 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 – Nov. 20 Activities Portage Bay piledriving schedule: Week of Oct. 26 – Nov. 1 Contact Info Email: sr520bridge@wsdot.wa.gov 24-hour construction hotline: 206-319-4520
