I-70 Interchange in Warrenton


The Groundbreaking Ceremony took place on September 25, 2017 (pictured is MoDOT District Engineer, Paula Gough, speaking at the ceremony in Warrenton.)


View the construction taking place through our I-70 Warrenton Interchange Flickr Album here.




The new interchange is being fully funded with a sales tax passed by residents in the city of Warrenton. Once the project is complete, MoDOT will own and

maintain the interchange. In exchange, the City has agreed to assume responsibility of ownership and maintenance of Route MM to Main Street and the

south outer road from Denny's to the new interchange.

More Information:

first impact

First Impact, a ThinkFirst Missouri traffic safety program, was recognized with a proclamation from the Warren County Commissioners on April 16th. To schedule a First Impact program for parents of teen drivers, contact First Impact Director Deana Dothage at (573) 884 - 3463.

(Photo Courtesy: Warren County Record)

Work Update for I-70 Interchange (June 15, 2018)

Work Update for I-70 Interchange (May 18, 2018)

Work Update for I-70 Interchange (March 12, 2018)

Speakers Available to Provide Updates on Interstate 70 Interchange Project

Winter Work Update Press Release (January 12, 2018)

Press Release: Work to Begin on September 25, 2017

Visit the City of Warrenton's Homepage