The Knox County Sheriff’s Office has released details on a Wednesday afternoon accident at the intersection of US 41 and Plank Road south of Vincennes.
Investigators say Heather Cox of Springfield, Illinois was driving an SUV northbound on 41 when she struck the right rear of a semi-tractor trailer that was making a left turn onto Plank Road.
Cox had to be extricated from her vehicle.
She was taken to Good Samaritan Hospital in Vincennes and then flown to Saint Mary’s Hospital in Evansville.
The driver of the semi-tractor trailer, William Halter of Vincennes, was not injured.