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SR 520 - Contact Us

Contact information:



  • 206-770-3500 (reception desk)
  • 206-770-3554 (staffed 8-5, Mon-Fri)

Social media : Youtube | Twitter (@WSDOT_520) | Flickr

Mail: SR 520 Bridge Replacement and HOV Program
999 Third Ave., Suite 2200
Seattle, WA 98104

Sign up for email updates about the SR 520 program

SR 520 Ombudsman:

Phone: 206-770-3659

Get weekly updates via email

Visit the WSDOT email updates page, enter your email address, and under "Construction Reports" select one of the following:

"SR 520 Bridge Replacement and HOV Program"
The weekly update on the entire program, from I-5 to I-405. Includes information on highway closures, construction milestones, and upcoming public meetings.

"SR 520 West Approach Bridge North Project"
Construction is underway in Seattle as we build the West Approach Bridge North (WABN). This weekly update focuses on impacts in the Montlake and Madison Park neighborhoods.

Requesting a change in sentinels' lighting color 
The new SR 520 floating bridge has four large towers, called "sentinels," that mark the east and west ends of the bridge. The sentinels are lit by multicolor LED lights that can be changed to promote public events of community significance. If you are interested in changing the sentinel lights for a public event or cause, please fill out our Sentinel Lighting Change Request Form and submit it to Details about the lighting policy and request process are listed in the request form.

Looking west across Lake Washington with the State Route 520 floating bridge to the right. It is dusk and the light towers on the ends of the bridge are lit up red.

Note: The Washington State Department of Transportation is a public agency and is subject to the State of Washington’s Public Records Act (RCW 42.56). Therefore, public comments and questions may be made available to anyone requesting them for non-commercial purposes.