Want to know what SR 520 construction activities are underway or coming soon? You've come to the right place. The map below allows you to search by date, activity or location for detailed information about current or upcoming construction related to the SR 520 Program.
9/29/2023 - 10/2/2023
Next highway closure: SR 520 closed across Lake Washington 9/29 - 10/2; SR 520 Trail open more...
How to use this page:
Note: This tool is presented for planning purposes only. Construction work is inherently dependent on weather and other factors, and activities are subject to change.