A 35-year-old woman was ejected from a vehicle during a rollover accident about 10:30 a.m. Monday at Missouri 152 and North Childress Avenue.
She was driving west on Missouri 152 when she lost control of the vehicle and drove off the right side of the roadway, police said.
The vehicle went airborne and overturned several times. The driver was in critical condition at a hospital.
Excessive speed is believed to be a factor in the wreck, police said Monday.