Traffic shifts planned for westbound I-70 near Foristell as pavement work continues

As work continues on the Improve I-70: Warrenton to Wentzville project, crews will shift westbound Interstate 70 traffic in the St. Charles County area, starting November 12. These shifts will take place near Foristell between the Warren/St. Charles County line and the Foristell Weigh Station (mile marker 202.8 – 205.4).

Traffic will shift onto the newly constructed pavement and existing driving lane to allow crews to construct the permanent passing lane and left shoulder.

To complete the traffic switch, westbound I-70 will be reduced to one lane during nighttime hours from 8 p.m. to 6 a.m. to allow for the repositioning of temporary barrier wall.

After the traffic switch occurs, motorists can expect the following traffic conditions and impacts through Spring/Summer of 2027:

• Traffic barriers will be in place along the left shoulders of westbound and eastbound I-70 for this area.
• 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 be reduced to one lane during nighttime hours of 8 p.m. to 6 a.m. All westbound lanes will continue to be narrowed.
• Eastbound I-70 may have intermittent left lane closures during nighttime hours of 8 p.m. to 6 a.m.

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.