A traffic accident in Fayette County has killed a Decorah woman.

The accident happened just before 11:30am Sunday, on Highway 150, just north of West Union.

A southbound semi driven by 56 year old Mark Ungerer of Hawkeye, collided head-on with a car driven by 65 year old Joan Mau of Decorah. Mau's car had crossed the center line.

Both drivers were taken to the West Union hospital, but Mau died from her injuries.

Ungerer was treated, but his injuries were not life-threatening.

The accident remains under investigation by the Iowa State Patrol, with assistance from the Fayette County Sheriff, West Union Fire, and Tri-State EMS.