Single lane on eastbound SR 520 between I-5 and Montlake Blvd. closed nightly July 22 – September 1 (excluding Sundays) Date: July 22, 2026 to At least September 1, 2026 Time: As early as 8 p.m. until 6 a.m. Mondays through Saturdays Activity details: Street and lane closure Impact type: NighttimeOvernightTraffic Description: Crews will use this closure for dump truck staging in coordination with the single lane closure on Boyer Avenue East for the Boyer Hillside regrade. Traffic: A single right lane on eastbound SR 520 between I-5 and Montlake Boulevard will close for construction nightly beginning as early as 8 p.m. until 6 a.m. Monday through Saturday nights from July 22 to at least September 1. The eastbound SR 520 off-ramp will remain open during these lane closures unless otherwise noted. These lane closures will not be in effect every night and sometimes will have different starting times (e.g. 8 p.m.., 10 p.m., 11 p.m., 11:30 p.m. or 11:59 p.m.). We will do our best to call out unique starting times for proper planning. The lane closure will always end at 6 a.m. Learn more about the Boyer Hillside regrade work on our Portage Bay Major Construction Updates webpage. Closures Eastbound SR 520 between I-5 and Montlake Blvd. closed overnight Aug. 8 Westbound SR 520 between Montlake Blvd. and I-5 closed nightly Aug. 10-13 Eastbound SR 520 off-ramp to Montlake Blvd. closed nightly Aug. 11 & 12 Montlake Blvd. closed between E. Hamlin St. and E. Louisa St. around-the-clock Aug. 21-24 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 1 (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
