The Rock County Sheriff’s Office is investigating a fatal traffic crash on Highway 59 north of Milton. Authorities say the accident happened a little after 3:30 Monday morning near the intersection of Jacobs Road. Investigators believe a vehicle driven by a 23-year-old old Milton woman crossed the center line and hit a vehicle driven by a 34-year-old area woman. The 34-year-old woman was killed. Passengers were also reportedly transported to an area hospital Deputies say while they were en route, the 23-year-old got out of her car, and was struck by a third vehicle and killed. Highway 59 was closed in both directions for close to six-hours.