SR 520 bridge/ramps closed across Lake WA overnight March 20-21

A WSDOT traffic camera photo shows a variable message sign over northbound I-5 near Pike Street, and the sign states that State Route 520 will be closed between Montlake Boulevard and 92nd Avenue on the Eastside from 9 p.m. Thursday, March 20th through 5 a.m. Friday, March 21st.

Heads up if you use the SR 520 bridge in either direction between Seattle and the Eastside!

Crews will close the SR 520 bridge and its associated on- and off-ramps across Lake Washington (between Seattle and the Eastside) overnight on Thursday, March 20. The closure will start at 9 p.m. and wrap up by 5 a.m. the following morning. See below for special closure limits:

• SR 520 westbound: SR 520 fully closed across Lake Washington between 92nd Avenue Northeast in Clyde Hill and I-5 in Seattle.
• SR 520 eastbound: SR 520 closed between Montlake Boulevard in Seattle and 92nd Avenue Northeast in Clyde Hill. Note: Travelers from I-5 heading eastbound on SR 520 will need to exit at Montlake Boulevard.

This closure is needed to complete testing and inspecting the lighting and fire suppression systems under the Montlake Lid.

The SR 520 Trail will stay open during this overnight closure.

Plan to use I-90 as an alternate route, and expect delays! Check out the SR 520 Construction Corner map for the most up-to-date information on closures and construction impacts.

A map of State Route 520 between Seattle and the Eastside (Medina). Marked in red is the closure of westbound State Route 520 between 92nd Avenue Northeast and I-5, and eastbound State Route 520 between Montlake Boulevard and 92nd Avenue Northeast. The State Route 520 trail will remain open.