Disastrous 3-Vehicle Crash on Highway MM near Highway 21 Injures 3 [Jefferson County, MO]

3 People Hurt in Jefferson County Multi-Vehicle Accident on Highway MM near Highway 21

JEFFERSON COUNTY, MO (June 17, 2026) – Monday night, a disastrous 3-vehicle crash on Highway MM near Highway 21 injured three people.

The incident happened at around 6:34 p.m. on Highway MM near Highway 21.

According to reports, a 2020 Ford EcoSport attempted to cross the westbound lanes and collided with two westbound Kawasaki Ninja motorcycles.

Moreover, responders transported the driver of the Ford with moderate injuries and the two motorcyclists with serious injuries to Mercy Hospital South for treatment.

At this time, the events leading to the crash remained unclear. When additional information becomes available, the public will be notified.

Due to limited information, the Missouri State Highway Patrol continued investigating the incident.

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