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SR 520 Bridge Replacement and HOV Program


Full SR 520 closure
Crews plan to close all lanes and ramps of SR 520 between Montlake Boulevard and 92nd Avenue Northeast from 11 p.m. Friday, Jan. 27, to 5 a.m. Monday, Jan. 30, to remove the final pieces of the westbound SR 520 off-ramp to Lake Washington Boulevard that span over SR 520.

SR 520 closures are subject to change based on weather conditions. For the most up-to-date information about construction activities and planned highway closures on SR 520, check out our SR 520 Orange Page.

Current News

Crews on Jan. 14 removed from Lake Washington the last pontoon from the old SR 520 floating bridge. Learn about the old bridge's decommissioning in this blog post or folio, or see our list of environmental reports, permits, practices and correspondence. More on the old bridge's removal also can be found on the Floating Bridge and Landings What's Happening Now page. 

Program Overview

The SR 520 Bridge Replacement and HOV Program is enhancing public safety and mobility by replacing the highway's aging, vulnerable bridges and making significant transit and roadway improvements throughout the corridor. The construction program's planned improvements extend from I-5 in Seattle to I-405 in Bellevue.

Click a project title for more information



Project photos on Flickr

View the latest SR 520 project photos on Flickr.

Live construction cameras

See views from live construction cameras.

Contact Information:  



Good To Go!



Phone: 206-770-3500

More information on Program Contact Us


West Approach Bridge North ProjectI-5 to Lake WashingtonFloating Bridge and Landings ProjectEastside Transit and HOV ProjectPontoon Construction Project