Lafayette Co. deputies say a driver is dead after a one-vehicle crash in Argyle Township.

The crashed happened around 9:35 a.m. Thursday on Highway G, about 2 and a half miles west of Argyle.

Crews arrived and found the 22-year-old driver of the vehicle dead.

The driver, who is a man from Monroe, was the only person in the vehicle.

Investigators say the vehicle left the highway just past Apple Grove Church Rd., and hit a bridge head on.

The driver was wearing a seat belt. Speed appears to be a factor in the crash.

Authorities are withholding the name of the driver pending notification of family.