Cody J. Marshal, 17, and Jaden Marshall, 9, were killed in the Tuesday afternoon accident.
State Police said Cody Marshall was driving a pickup north on La. 121 and turned west on La. 28 into the east-bound lanes. After a short distance, he turned right into the west-bound lanes trying to enter La. 121 North.
A rig driven by William Duck, 43, of Lincoln, Ala. struck the pickup.
A 15-year-old passenger in Marshall’s truck was injured.
Police said none of the pickup occupants was wearing a seat belt.