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Overnight Closure of I-64 Exit Ramp to I-70 in Wentzville for Construction, Detour Announced

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Published on October 27, 2025
Overnight Closure of I-64 Exit Ramp to I-70 in Wentzville for Construction, Detour AnnouncedSource: Facebook/Wentzville Missouri Police Department

Heads up, Wentzville and St. Charles County travelers—your route is about to be upended for a night. According to the latest social media update from the Wentzville Missouri Police Department, the westbound Interstate 64 exit ramp to westbound Interstate 70 will be closed overnight tomorrow, October 28, for construction reasons. The closures, which are part of the ongoing Improve I-70 Warrenton to Wentzville Project, are weather permitting, and they are scheduled to begin at 9 p.m. and stretch until 5 a.m. the next morning.

For those caught by surprise, the detour will take motorists on a bit of a roundabout journey. If you're heading west on I-64, you'll need to take the detour via the eastbound I-70 Exit 1B ramp, then exit at the Route A interchange to find your way back onto the westbound lanes of I-70. The shift in traffic is necessary as crews work diligently to lay down new pavement and construct the new I-70/I-64/U.S. Route 61 interchange. Initially, this task was penciled in for the tonight, October 27, but plans have since pushed to the following night.

The Wentzville Police Department's Facebook post provided all the pertinent details for those who frequent this part of the interstate, advising drivers to plan ahead for potential delays. These closures highlight the larger infrastructure efforts that have been impacting traffic patterns in the area for some time now, as the region undergoes significant roadway improvements.