Eastbound SR 520 off-ramp to Montlake Blvd. closed nightly May 18-21 and 27-28 Date: May 4 to May 28 Time: 10 p.m. to 6 a.m. nightly (excluding weekends) Activity details: Ramp closure Impact type: NighttimeOvernightTrafficNoise Description: Crews will use these closures to prepare for an upcoming traffic shift of the off-ramp scheduled for later this spring. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project. Traffic: The eastbound SR 520 off-ramp to Montlake Blvd. in Seattle will close nightly for construction beginning at 10 p.m. until 6 a.m. on the dates of May 18-21 and May 27-28. All traffic from I-5 entering eastbound SR 520 during these hours will pay the SR 520 Bridge Toll with this ramp closed. Those who do not want to pay the toll or who need to access Montlake Blvd. from I-5 must take alternate routes. Eastbound SR 520 remains open across Lake Washington. Closures Eastbound SR 520 off-ramp to Montlake Blvd. closed nightly May 18-21 and 27-28 Eastbound SR 520 closed between I-5 and Montlake Blvd. in Seattle May 29 – June 1 Long-term closures Vibratory casing installation in Portage Bay schedule: Week of May 25-29 Boyer Ave. E. between E. Roanoke St. and Everett Ave. E. reduced to a single lane daily Feb. 18 – June 12 Contact Info Email: sr520bridge@wsdot.wa.gov 24-hour construction hotline: 206-319-4520
Eastbound SR 520 closed between I-5 and Montlake Blvd. in Seattle May 29 – June 1 Date: May 29, 2026 to June 1, 2026 Time: 11 p.m. Friday to 5 a.m. Monday Activity details: Partial highway closureRamp closureHigh-impact construction Impact type: Around-the-clock Description: Crews will use the closure to prepare for an upcoming traffic switch of the eastbound off-ramp to Montlake Blvd. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project. Learn more about this traffic shift on our latest blog post. Traffic: Eastbound SR 520 and all associated on- and off-ramps between I-5 and Montlake Blvd. in Seattle will close for construction beginning at 11 p.m. on Friday, May 29, until 5 a.m. Monday, June 1. During this closure, crews will adjust the exit point to Montlake Blvd. and connect the bridge to a new, temporary off-ramp. Crews will also connect the temporary off-ramp to Montlake Blvd. and then prepare to remove the existing off-ramp to make space for future construction. Westbound SR 520 remains open across Lake Washington to I-5. Eastbound SR 520 remains open across Lake Washington. It is only the section of eastbound SR 520 between I-5 and Montlake Blvd. that will close. Please note: The Montlake Blvd. on-ramp to eastbound SR 520 will also close during this weekend. Only HOV 3+ and transit are allowed to use the direct access ramp on Montlake to enter eastbound SR 520. All other travelers must use alternate routes. Closures Eastbound SR 520 off-ramp to Montlake Blvd. closed nightly May 18-21 and 27-28 Eastbound SR 520 closed between I-5 and Montlake Blvd. in Seattle May 29 – June 1 Long-term closures Vibratory casing installation in Portage Bay schedule: Week of May 25-29 Boyer Ave. E. between E. Roanoke St. and Everett Ave. E. reduced to a single lane daily Feb. 18 – June 12 Contact Info Email: sr520bridge@wsdot.wa.gov 24-hour construction hotline: 206-319-4520
