We constructed a roundabout at the SR 9/SR 531 intersection to improve safety and relieve congestion.
Our engineers believe that a roundabout is the best solution for improving safety and relieving congestion at the State Route 9/State Route 531 intersection in Arlington.
The roundabout will help prevent serious collisions for the 17,000 drivers that use the intersection daily.
A roundabout can help reduce congestion more efficiently than a signal as a significant amount of development occurs near this intersection.
Partnerships & Cooperation
We held two public open houses and worked with the city of Arlington before designing and building the roundabout. We put out regular updates about the project to the public and media, to help keep drivers moving during construction.
Marqise Allen, WSDOT communications
15700 Dayton Ave. NE
Shoreline, WA 98233
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