Joint Venture Wins $583 Million Design-Build Project for Missouri I-70 Expansion

The Missouri Highways and Transportation Commission announced the selection of a joint venture comprising contractor Millstone Weber, designer Jacobs, and partner WSP for a 44-mile design-build highway project along Interstate 70 between Kingdom City and Warrenton. According to the announcement, the contract value is approximately $583 million, with the team currently negotiating final contract details. The scope of work involves adding a third lane in each direction, replacing all existing pavement along the section with new full-depth concrete pavement, replacing three bridges, rehabilitating six bridges, adding an eastbound climbing lane at Mineola Hill, and redesigning a Norfolk Southern Railroad crossing. This contract marks the sixth project within Missouri's broader program to expand nearly 200 miles of I-70, backed by a $2.8 billion state funding commitment. Construction is scheduled to commence in the first half of 2027 and reach completion in late 2030.

Key takeaways

• The joint venture of Millstone Weber, Jacobs, and WSP was selected for the $583 million, 44-mile I-70 design-build contract in Missouri.
• The engineering scope includes adding lanes in both directions, replacing three bridges, rehabilitating six bridges, and replacing pavement with full-depth concrete.
• The project represents the sixth contract under Missouri's $2.8 billion initiative to widen nearly 200 miles of Interstate 70.
• Construction work is scheduled to start in the first half of 2027, with anticipated completion by late 2030 as final contract terms are negotiated.