Stewart was patrolling Route 347 (Burem Road) heading toward Rogersville about 11:30 p.m. Saturday when the single-vehicle accident occurred.
Investigating Tennessee Highway Patrol Trooper Billy Collier said Monday that Stewart's tires left the roadway, and then he overcorrected.
"He was westbound about the 2.5 mile marker coming around a little curve where Laster's Towing is at," Collier said. "The right side tires got off the right edge of the roadway and he overcorrected the vehicle, sending it into the eastbound lane. He then overcorrected again, lost control of the car and hit an embankment, which caused the vehicle to overturn and strike a utility pole after it overturned."
An eyewitness to the wreck called 911, and Stewart was flown via Wings Air Rescue to Holston Valley Medical Center in Kingsport. Stewart was kept overnight for observation and released from the hospital Sunday.
Collier said he observed Stewart to have suffered a lot of bruises and abrasions. The patrol car was totaled.
"He's pretty sore," Sheriff Roger Christian said. "He'll be off for a few days until he gets some of the soreness out of him."
There were no citations issued by the THP.
"It doesn't appear that speed was a factor," Collier said. "He wasn't responding to a call or anything like that. Coming off that curve there's no shoulder, and he just got off into the edge and overcorrected. Thankfully he wasn't badly injured, but as many miles as you drive in this line of work, an accident is bound to happen sooner or later."