Project overview
Crews will build the three remaining miles of SR 510 between Cullens Road and 170th Street Southeast in Yelm. The new connection, like the previously built Phase 1, is proposed to be a two-lane highway with bicycle and pedestrian facilities.
Timeline
Summer 2025 - Winter 2027
Project status
Pre-construction
Funding
$58.5 million
What to expect
This project has not yet started. The proposed alignment follows undeveloped WSDOT right of way.
A roundabout is planned at the intersection of SR 507 and 170th Street Southeast. Workers will create lanes for travelers to move through the work zone.
This map shows previously completed Stage 1 and the proposed path of SR 510 (Stage 2) between Cullens Road and 170th Street Southeast/SR 507.