Leon County deputies say around 10:30 Monday morning a semi carrying sand tried to stop at a red light at the intersection of State Road 20 and Aenon Church Road.
Deputies say the driver wasn't able to maneuver correctly, eventually crashing into a light pole, flipping the truck on its side and trapping the driver inside.
Witnesses say the driver tried to climb out, but could not. He was pronounced dead at the scene.
Deputies will not release the driver's name at this time until next of kin have been notified.