An overturned tractor-trailer truck has reduced Interstate 75 in Whitley County to one lane.
The wreck occurred at approximately 6:30 p.m. on northbound I-75 near the 21-mile marker.
Emergency personnel said the tanker truck was empty.
The driver was reportedly not injured, but had to be extricated from the vehicle.
However, officials said it a medical emergency likely caused the wreck.
As a result, the driver was airlifted to the University of Kentucky Medical Center
While the truck is out of the road, traffic has been reduced to one lane as emergency personnel work to clear the scene.
The right lane is closed to traffic in the area.
Oak Grove Fire Department and Woodbine Fire Department responded to the call.