A 39-year-old man from Liverpool has died after his truck veered off Highway 103 near exit 21 in Port Mouton.
Emergency services responded around midday on Thursday and found the Ford F150 in a wooded area.
The man, who was the only occupant of the vehicle, was pronounced dead at the scene.
Investigators, including a collision reconstructionist, are looking into the cause of the crash.
No further details have been released as the investigation is ongoing.
Highway 103 was shutdown briefly to westbound traffic while the scene was investigated but has since reopened.