MoDOT to shift eastbound I-70 lanes from Foristell weigh station to Wentzville Parkway Oct. 1

ST. CHARLES COUNTY - Crews with the Improve I-70 Warrenton to Wentzville Project will shift lanes of Interstate 70 between the Foristell weigh station and Wentzville Parkway (mile markers 205.4-208) starting overnight Thursday, October 1 from 8 p.m. to 6 a.m. Overall, motorists can expect the following traffic conditions and impacts. All work is weather permitting.

• October 1 - Eastbound traffic will shift to the final lane configuration; however, the new third lane of I-70 will remain closed.
• October 1 - East of Wentzville Parkway, eastbound traffic will shift RIGHT onto the new pavement and away from the temporary drainage structures.
• October 6 - Westbound traffic will shift LEFT onto the new pavement to allow the remaining construction of the I-70 westbound lanes.
• October 6 - The David Hoekel Parkway westbound on and off ramps will close for 30 days.

After the westbound traffic switch occurs, traffic barriers will be in place along the right and left shoulders of westbound I-70. Two lanes of traffic will be maintained on I-70 during peak travel times, and the speed limit will remain 55 mph throughout the work zone. Westbound

I-70 will experience nightly right lane closures from 8 p.m. to 6 a.m. during construction.

The lane shifts and nightly lane closures will remain in place through 2026. Motorists are encouraged to pay attention in work zones, drive the posted work zone speed limit, and allow extra time for travel. All work is weather-dependent, and schedules are subject to change.

This work is part of the second project in MoDOT's Statewide Improve I-70 Program. Improve I-70: Warrenton to Wentzville is a $600 million Design-Build project that will improve the 20-mile stretch of I-70 between Warrenton and Wentzville. The project was awarded to the Improve 70 Alliance team in November 2024. Construction is anticipated to be complete by the end of 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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