Counties Impacted
St. Charles
Warren
Route Impacted
70
Work Type
Corridor Upgrades
Planning Phase

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

In Progress
EIS Re-evaluation
Spring 2023 - Summer 2024
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Complete
Public Information Meeting
Monday, Aug. 28, 4 to 6 p.m. – Wentzville City Hall Board of Alderman Meeting Room, 1001 Schroeder Creek Blvd. Wentzville, MO
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.

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Complete
Industry Meeting
Tuesday, Nov. 14, 2023, 1 p.m. to 2:30 p.m.
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.

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Release RFQ
TBD
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SOQ Due
TBD
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SOQ Shortlist
TBD
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Issue RFP
TBD
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Proposals Due
TBD
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Commission Selection of Design-Build Team
TBD
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Not Started
Construction
Fall 2024 - Fall 2028
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Workers on an elevated platform

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.

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