State Police said Thomas McNabb, 32, of Bunkie was driving on La. 1176 east of La. 115 (McArthur Street) when his truck ran off the road in curve and struck a tree about 7:40 a.m.
McNabb was not wearing a seat belt and was partially ejected when the vehicle overturned, troopers said.
The former Marine served with the 2nd Marine Expeditionary Brigade 1/10th in Operation Iraqi Freedom during 2003.