At approximately 7:30 a.m., emergency responders were dispatched to an area on State Road 42 near County Road 100 East for the accident.
Details are currently sketchy, but according to Clay County Sheriff's Department Patrol Sgt. Jason Frazier, the driver of the vehicle, who remains unidentified, but said was from West Terre Haute, was traveling westbound on SR 42 and left the roadway.
"It looked like he traveled 150-yards off the roadway before coming to a rest," Frazier told The Brazil Times.
Frazier suggested the vehicle may have rolled at least one time.
"It looked like he went across the culvert," Frazier said. "It was a pretty violent rollover."
Poland resident and fourth-year Indiana State University nursing student Chris McGillam told The Times she arrived on the scene heading to school.
"I tried to keep him awake and talk to him," McGillam said. "He was thrashing about so I tried to keep him still."
The man had to be extricated from the vehicle and was transported to St. Vincent Clay Hospital via TransCare for stabilization. The current condition of the man is unknown.
East and west traffic on SR 42 was stalled as crews cleaned up the area.
Other agencies responding to the accident included Indiana State Police, Clay County Search and Rescue, the Center Point Volunteer Fire Department, Air Evac, and the Jackson Township Volunteer Fire Department.
This story will be updated as more information is provided.