Projects and improvements in your county.
Explore the progress of projects focused on creating safe and reliable ways to move people and goods around Washington.
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Featured Project
SR 509 Completion Project
The SR 509 Completion Project in south King County builds a new four-lane tolled expressway between I-5 and SR 509's current end near Seattle-Tacoma International Airport, builds new I-5 ramps, improves I-5 interchanges and builds new bridges.
Access the resources you need to maintain and improve the transportation system.
Latest from WSDOT...
- VANCOUVER – As summer gets closer, travelers in southwest Washington can expect smoother, safer highways thanks to ongoing road repair work.
Starting Monday, April 28, Washington State Department of Transportation maintenance crews will begin work across Clark, Cowlitz, Klickitat, Lewis, Pacific, Skamania, and Wahkiakum counties. - SEATTLE – People who walk, bike or roll through Seattle’s Montlake neighborhood will need to prepare for a five-year closure of the Bill Dawson Trail beginning Monday, May 12.
- LACEY – State Route 510 near Lacey will remain closed around the clock for the foreseeable future. The closure is located at milepost 6 between Old Pacific Highway Southeast and Rockcress Drive Southeast.