Project Summary
Improve I-70: Kingdom City to Warrenton is a $583 million Design-Build project that will improve the 44-mile stretch of Interstate 70 from Kingdom City to Warrenton.
The Millstone Weber Team, comprised of contractor Millstone Weber, designer Jacobs, Inc., and key partner WSP, was selected as the apparent best-value proposer and Design-Build contractor in Nov. 2026. Negotiations to finalize the contract are currently in progress.
The next steps include finalizing the contract, and the contractor team will be doing more detailed design of the roadway and interchanges and outlining the construction schedule with traffic control plans. MoDOT will host public information meetings in early 2027 as these details are available. Construction is scheduled to begin in Spring/Summer 2027 with an anticipated completion in late 2030.
This project is one of several which will modernize the I-70 corridor across the state. 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.
Proposal Highlights
The selected proposal includes the following highlights:
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A third lane in each direction of I-70, as well as the replacement of all existing I-70 pavement between Kingdom City and Warrenton with all new full-depth concrete pavement.
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Three bridge replacements.
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Six bridge rehabilitations.
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A fourth lane along eastbound I-70 at Mineola Hill (climbing lane).
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Redesigned Norfolk Southern Railroad Crossing at High Hill.
Proposal Renderings
Project Goals
The following prioritized goals have been established for this project:
- Deliver the project by December 31, 2030 within the program budget.
- Provide a third lane of travel for eastbound and westbound I-70 from Kingdom City to Warrenton.
- Modernize I-70 while improving pavement, bridges, and interchanges to enhance mobility and freight movement.
- Minimize construction impacts with a focus on work zone safety, communication, and construction staging while maintaining mobility.
- Provide expanded employment opportunities while developing and using a diverse workforce.
Warrenton Sight Distance Improvements
Project News Releases
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MoDOT announces prequalified teams for sixth Improve I-70 project, Kingdom City to Warrenton
JEFFERSON CITY – The Missouri Department of Transportation has received Statements of Qualifications (SOQs) from the teams interested in competing for the contract to design and construct the sixth project of MoDOT’s statewide Improve I-70 Program. I...
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Utility Work Scheduled in Callaway, Montgomery and Warren Counties
The Missouri Department of Transportation will begin surveying and locating utilities as it prepares for the Kingdom City to Warrenton segment of Improve I‑70.
This work will occur along the I-70 corridor and neighboring outer roads in Callaway...
Stay Informed
Sign Up For Project/Construction Press Releases
To receive specific project updates and construction related press releases, sign up for Improve I-70 e-mails by visiting MoDOT e-Update and selecting one or more of the Improve I-70 options under the Improve I-70 heading. If you already have an e-Update account, you can login and adjust your e-mail preferences.
Project Milestones
Project Contacts
Eric Kopinski, P.E.
Title
Improve I-70 Program Director
Department
Central Office
Contact Info
E-mail: Eric.Kopinski@modot.mo.gov
E-mail: Eric.Kopinski@modot.mo.gov
Zachary Osman, P.E.
Title
Improve I-70: Central Project Team Director
Department
Central Office
Contact Info
Phone: 573-508-5062
Email: Zachary.osman@modot.mo.org
Improve I-70: Kingdom City to Warrenton
Phone: 573-508-5062
Email: Zachary.osman@modot.mo.org
Improve I-70: Kingdom City to Warrenton
Lairyn McGregor
Title
Improve I-70 Communications Coordinator
Department
Central Office
Contact Info
Phone: 816-607-2152
Email:Lairyn.McGregor@modot.mo.gov
Phone: 816-607-2152
Email:Lairyn.McGregor@modot.mo.gov
Related Information
Improve I-70
I-70 is a vital transportation corridor in Missouri, connecting the state’s two largest cities and carrying more rural daily traffic than any other route in the state. The 250 miles of I-70 through Missouri have been an engine for economic growth and...
Improve I-70 Projects
MoDOT has been working on the best plan to be efficient and innovative in how the 200 miles of I-70 will be delivered. As of May 2025, the Improve I-70 individual project limits have been updated and now include eight total project segments across...
Nearby Projects
Improve I-70: Columbia to Kingdom City
Improve I-70 Columbia to Kingdom City is a $426 million Design-Build project. Millstone Weber has been selected as the best-value proposer and Design-Build contractor of Improve I-70: Columbia to Kingdom City. This $405 million fixed-cost contract...
Improve I-70: Warrenton to Wentzville
Improve I-70: Warrenton to Wentzville is a $600 million Design-Build project that will improve and add a third lane to I-70 between Warrenton and Wentzville. The Improve 70 Alliance (Emery Sapp & Sons, Clarkson Construction, HNTB, and Bartlett and...