The accident, around 9:30 a.m., happened just east of Baumhart Road.
The woman, who was westbound in a construction zone, drove off the left side of the road and nose-dived in the deep median. Her car flipped and came to rest on its roof, according to Assistant Chief Bill Kleinhans of the Vermilion Fire Department.
A passer-by helped the woman get out of the vehicle through a rear window, and she was sitting on the grass in the median when firefighters arrived. She was taken to Community Regional Medical Center in Lorain.
The woman’s condition was not immediately available.