DPS Troopers are investigating a fatal crash along HWY 77 between Driscoll and Bishop involving an 18-wheeler and a small passenger car.

Troopers say that the 18-wheeler was heading north around 10 p.m. when it hit the small passenger car coming off of County Road 12, for an unknown reason. The collision sent the car into the median.

Traffic heading north was diverted until the scene is cleared.

A woman, believed to be in her 40's, was pronounced dead at the scene. The driver of the 18-wheeler suffered minor injuries.

The cause of the accident is still under investigation.

Stay with 3News for the very latest in this developing story.