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...
- BELLINGHAM – A three-year project to remove 17 barriers to fish migration along a 6-mile stretch of Interstate 5 in Skagit and Whatcom Counties will begin construction Wednesday, April 30.
- OLYMPIA – The Washington State Department of Transportation Aviation Division is currently accepting applications for the first round of the 2025-2027 Airport Aid Grant Program. WSDOT anticipates awarding approximately $1.4 million in funding.
- CARBONADO – The State Route 165 Carbon River/Fairfax Bridge is permanently closed south of Carbonado in Pierce County due to deterioration of steel supports across the bridge. A planning study is underway to evaluate next steps to address the bridge condition.