Improve I-70 Warrenton to Wentzville
MoDOT, in coordination with the Federal Highway Administration, is finishing the re-evaluation process to update the Environmental Impact Statement (EIS) of Interstate 70 (I-70) in Warren and St. Charles counties. As work to update the Environmental Impact Statement wraps up, Improve I-70 Warrenton to Wentzville will transition to a Design-Build project. For more information about this portion of the Environmental Impact Study (Montgomery, Warren, and west St. Charles counties), please click here.
Since its original construction more than 50 years ago, I-70 has been a vital lifeline for moving people, goods, and information across Missouri and beyond.
Improve I-70: Warrenton to Wentzville Milestones
Tuesday, Aug. 29, 4 to 6 p.m. – Warren County Administration Building, 101 Mockingbird Lane, Warrenton, MO
MoDOT invited the public to attend informational meetings to learn about the proposed plan and next steps for I-70. These were open house style meetings, and no formal presentations will be made. The public could attend the meetings anytime during the advertised hours, and the information will be the same at each location. MoDOT is currently in the planning stage of the Improve I-70 Program. MoDOT engineers shared preliminary information about the goals for improving I-70, possible construction schedules for the 200 miles, and next steps. Learn more here.
Banquet Hall in Progress Park (968 Meyer Rd. Wentzville, MO 63385)
For industry access to information such as the sign in sheet and presentation from the industry meeting, please email improvei70@modot.mo.org and request access to Improve I-70: Warrenton to Wentzville's industry Sharepoint site.

What is Design-Build?
Design-build is a delivery method that includes hiring one contracting team to complete the design work and build the highway improvement under one contract. MoDOT provides the project goals, budget and schedule and the contractor team completes the work. This technique has been known to significantly save time and provide cost savings.