The Missouri Highways and Transportation Commission has selected the Millstone Weber team as the apparent best value proposer and design build contractor for the Improve I-70 project between Kingdom City and Warrenton. The team comprises contractor Millstone Weber, designer Jacobs and key partner WSP, chosen from four shortlisted design build teams. Negotiations to finalise the contract are in progress.
The project is valued at 583 million dollars. It adds a third lane in each direction, replaces pavement with full depth concrete and builds or rehabilitates nine bridges along 44 miles of Interstate 70. Construction is scheduled to begin in spring or summer 2027, with completion anticipated in late 2030, and public information meetings are planned for early 2027 once design and traffic control plans are set.
It is the sixth of eight projects in the Improve I-70 programme, which will widen nearly 200 miles of the interstate between Blue Springs and Wentzville. Missouri’s fiscal 2024 budget provided 2.8 billion dollars in general revenue and bonding authority for the third lane programme.
Millstone Weber is also working on the programme’s first project, from Columbia to Kingdom City, so the same contractor now holds adjoining segments of the corridor, which simplifies staging but concentrates delivery risk in one builder.