A 53 year old Bismarck man is dead after failing to negotiating a curve in Mandan.

The accident happened near Eastside Court and Main Street. The rider is William Stahle.

According to the Highway Patrol, the rider's motorcycle hit a curb. The bike flipped, came back across the road and hit another curb. Stahle came to rest in a ditch after being thrown from the bike.

Justin Sullivan / Getty Images

Stahle was pronounced dead at the hospital.