Nighttime drivers planning to use State Route 520 should be prepared to take alternate routes across and around Lake Washington on Monday and Tuesday nights, May 2-3 as crews working for WSDOT test tolling equipment on the SR 520 bridge.

Crews will close all lanes of eastbound SR 520 between Montlake Boulevard in Seattle and 92nd Avenue NE in Clyde Hill on Monday, May 2 from 11:59 p.m. to 4:30 a.m. the following morning.

Crews will close all lanes of westbound SR 520 between 92nd Avenue NE in Clyde Hill and Montlake Boulevard in Seattle on Tuesday, May 3 from 11:59 p.m. to 4:30 a.m. the following morning.

During these closures, crews will test and adjust equipment in preparation for tolling of the SR 520 bridge.