Plans to build a casino, resort, and tribal center would have led to increased traffic volumes on surrounding roadways and on the NW La Center Road/I-5 interchange in La Center, Washington, causing the interchange to be under capacity and therefore unsafe and inefficient.


Working with the Cowlitz Tribe, the Washington Department of Transportation (WSDOT), and the City of La Center, Kittelson led a multidisciplinary team that planned, designed, and constructed a new interchange and modified the nearby roadway network. Kittelson prepared the interchange justification report, traffic impact analysis report, and documents to meet NEPA requirements. Several alternatives were developed to address traffic volumes and closely spaced roads. Using multi-agency workshops and unique public outreach activities, the team developed interchange concepts, traffic control plans, an access management approach, and local circulation alternatives.

La Center Rd

La Center Rd



The Outcome

A New Freeway Interchange in Just 10 Months

An open and collaborative planning and design process led to constructed improvements that support long-term traffic demands and pedestrian/bicycle activities. The improvements have also resulted in lower maintenance costs, improved aesthetics, a gateway to the City of La Center and Cowlitz Reservation, and better safety for the traveling public.




Mohegan Gaming Advisors, LLC


La Center, Washington