An Alabama woman was killed Tuesday night after she lost control of her motorcycle and was thrown off an Interstate overpass.

Wendy Sue Jantz, 52, of Birmingham, Alabama, was riding a motorcycle on the on ramp from Interstate 59/20 to the Elton B. Stephens Expressway at approximately 9:14 p.m. Tuesday when the accident happened.

Authorities say she lost control, struck the side of a concrete barrier and was thrown to the roadway below.

She was pronounced dead at the scene, Jefferson County Deputy Coroner Bill Yates said.

Birmingham police are investigating the accident.