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SR 520 Bridge Replacement and HOV Program


The SR 520 floating bridge and mainline are currently open.  For more information about SR 520 closures and construction activities, visit our SR 520 Orange Page.

The 24th Avenue East bridge is scheduled to close as soon as the week of Aug. 31. For a bicycle/pedestrian route around the closure, visit our WABN website.

Current News

Low-rise deck complete for new SR 520 floating bridge
Construction workers on Monday, Aug. 24, installed the last of 776 precast sections of roadway deck for the new SR 520 floating bridge's low-rise span. Read more ...

Governor signs transportation package, funds 'Rest of the West'
Gov. Inslee signed a major package of transportation legislation on July 15 that provides $1.64 billion to complete SR 520 improvements from I-5 to Lake Washington – the “Rest of the West.” Read what the governor and Transportation Secretary Lynn Peterson had to say about the package.  

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

View latest project photos on Flickr  including the  winning pontoon photo contest photos .

Live construction cameras

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

Contact Information:  



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Phone: 206-770-3500

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