Skip Top Navigation

SR 520 Bridge Replacement and HOV Program


The eastbound lanes of SR 520 from Montlake Boulevard to the highway's East Lake Washington Boulevard on-ramp will close the night of May 18-19 for utility work. Learn more by visiting our Highway Closures page.

Current News

The SR 520 website receives a spring cleaning

We recently made some improvements to the SR 520 Program website. The left-hand navigation has been made substantially less busy, some new content has been added, and pages have been reorganized to provide a more intuitive structure. Read more ...

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.

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