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SR 520 Bridge Replacement and HOV Program


The SR 520 floating bridge and mainline are open. There are no SR 520 construction closures scheduled at this time. For more information about SR 520 closures and construction activities, visit our Orange Page

Current News

Missed our "MWDBE" SR 520 A&E contract opportunities open house? Materials now available online
WSDOT hosted an open house on June 2 at the Seattle Central Library to promote potential SR 520 contract opportunities in engineering and design for Minority, Women and Disadvantaged Business Enterprises (MWDBE). Meeting materials are now available online

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
SR 520 Projects - Click project titles for more information

Project photos on Flickr

final pontoon float-in View latest project photos on Flickr including the winning pontoon photo contest winners.

Live construction cameras

installation of east transition span
See views from live construction cameras.

Contact Information:  



Good To Go!



Phone: 206-770-3500

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