An accident early Thursday morning on northbound I-75 reduced traffic to one lane just north of Bowling Green, according to the State Highway Patrol.
About 4 a.m. a tractor trailer was involved in a crash about 1.5 to 2 miles north of Bowling Green, a dispatcher said.
Highway Patrol officials were no longer on scene at 9:30 a.m., but clean up crews are expected to be there until about 10:30 a.m.
Details of the crash were not available.