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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

Tolls increasing on SR 520 July 1 
Drivers who cross Lake Washington using the SR 520 Bridge are reminded that new toll rates will go into effect Wednesday, July 1. Read more from our latest program email update.

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

More information on Program Contact Us