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.

Please see this closure update for important information about the eastbound SR 520 off-ramp to Montlake Blvd. reopening timeline.

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.