I-5 - SR 510 Interchange - Reconstruct Interchange - Complete August 2021

Project news

Crews reconfigured the Marvin Road overpass to create a diverging diamond interchange.

How you benefit 
The rebuilt interchange is intended to help ease congestion and reduce the potential for crashes. A diverging diamond interchange improves traffic flow by allowing drivers to make a free left turn onto the highway without stopping at a traffic signal. Pedestrians use a network of crosswalks and a barrier separated walkway to cross the overpass. Bicyclists can also use the pedestrian path to cross the overpass or use dedicated bike lanes. 

The total project cost approximately $47.4 million


Lacey Project Office

I-5 - SR 510 Interchange locational map