MoDOT to begin construction to realign I-70 at Wentzville Parkway starting overnight March 30

ST. CHARLES COUNTY - Crews with the Improve I-70 Warrenton to Wentzville Project will begin construction of drainage structures and temporary pavement in the median of both directions of Interstate 70 between Wentzville Parkway and the Norfolk Southern Railroad bridge starting overnight Monday, March 30. All work is weather permitting.

Work will run from 9 p.m. to 5:30 a.m. each night. A temporary barrier wall will be in place along the right and left shoulders of eastbound I-70 beginning March 30. Westbound I-70 will have a temporary barrier wall along the left shoulder starting the week of April 6. Lanes in both directions will be reduced to 11-foot width. During overnight hours, there will be left lane closures in both directions.

This work is part of the reconstruction of Interstate 70 with adding a third lane in each direction and the realignment of I-70 between Wentzville Parkway and Route Z.

The Improve I-70 Warrenton to Wentzville Project covering the eastern portion of I-70 was awarded in November 2024. Construction is tentatively set to take place 2025-2028.

Missouri's FY2024 budget, approved through the state legislative process and signed into law by the governor, provides $2.8 billion in General Revenue to build a third lane of I-70 across the state. The program will plan, design, construct, reconstruct, rehabilitate, and add a third lane in each direction on nearly 200 miles of I-70, from Blue Springs to Wentzville.

For more information on the Improve I-70 Program and to sign up for program e-mails, visit http://www.modot.org/improvei70 .

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