The Missouri Highways and Transportation Commission has officially designated the team responsible for designing and constructing an expanded section of Interstate 70 east of Kingdom City, spanning Callaway, Montgomery, and Warren counties.
St. Charles-based contractor Millstone Weber has been selected to lead the Improve I-70: Kingdom City to Warrenton project, as confirmed by a news release issued by the Missouri Department of Transportation. The design-build team will further consist of designer Jacobs Inc. and key partner WSP.
The contractor’s proposal includes the addition of a third lane in both directions along I-70, the replacement of three bridges, a fourth lane designated as a climbing lane on eastbound I-70 at Mineola Lane, a redesigned Norfolk Southern Railroad Crossing at High Hill, and the rehabilitation of six additional bridges, as outlined by MoDOT.
The project encompasses 44 miles of Interstate 70 and is anticipated to commence construction in the spring or summer of 2027. The full completion of the Improve I-70 Program is scheduled for no later than the end of 2030.
Contract negotiations with the design-build team are currently ongoing to finalize the terms of the agreement, according to the news release.
As part of the broader Improve I-70 Program, MoDOT has divided the interstate into eight distinct segments, each representing a separate project aimed at adding a third lane in both directions across the state.
This latest project extends eastward from the groundwork established by the first initiative under the Improve I-70 Program, which covered the stretch between Columbia and Kingdom City.
The contract for that initial segment was awarded in February 2024, with construction commencing in the summer of the same year. That project is expected to reach completion by late 2027, according to MoDOT.
