A 21 year old Yankton man died in a one car accident Wednesday afternoon on the south end of the Discovery Bridge. The Cedar County Sheriffs Office said in a release that a north bound Honda Civic driven by Joshua Hauger left the highway and hit the east bridge rail. Hauger, who was wearing a seat belt, was pronounced dead at the scene. The accident was reported about 3:30. The Yankton County Sheriffs Office, Yankton Emergency Services and the Nebraska Department of Transportation assisted at the scene.