A 39-year-old Sweetwater man was killed when his SUV crashed at an Interstate 75 bridge in Loudon County early Sunday morning.

Tennessee Highway Patrol Trooper Adam Woody said Gregory Collette was driving a 2008 Chevrolet Tahoe in the southbound lane. The trooper said the SUV left the roadway on the left side, going into the median.

The trooper said the vehicle struck a guardrail and flipped onto its side and then slid into the bridge embankment.

Trooper Woody's report said Collette had been drinking. Alcohol and drug tests were ordered as is standard procedure in fatal accidents to see if indeed anything contributed to or caused the accident.