The Montlake Boulevard ramp to eastbound SR 520 will shut down during this overnight closure. All other SR 520 ramps and lanes will remain open.
Crews will repeat the overnight eastbound closure from 11 p.m. Wednesday, May 20, to 5 a.m. Thursday, May 21.
Crews working on the West Approach Bridge North Project will use the closure to continue installation of a new sewer line beneath the highway.