A 33-year-old Zachary man was killed Friday night in a crash involving an 18-wheeler on La. 1 between Addis and Plaquemine, State Police said.

Delandro L. Henderson of Zachary was pronounced dead at the scene of the accident, which occurred shortly before 6:30 p.m, said Trooper Jared Sandifer, State Police spokesman. Henderson was not wearing a seat belt.

Henderson was headed northbound on La. 1 when he collided with a 2002 International 18-wheeler after the driver of the truck stopped at a railroad crossing, Sandifer said. Henderson tried to change lanes to avoid a collision, but his 2005 Chevrolet Silverado struck the rear of the 18-wheeler.

The driver of the 18-wheeler, 42-year-old Aradundell Parker of Baton Rouge, was wearing a seat belt and was uninjured. Impairment on his part was not a factor in the crash, Sandifer said.

State Police were investigating the crash.

Follow Charles Lussier on Twitter, @Charles_Lussier.