(Meridian, 1924) US81 single lane double deck bridge across Missouri River in Yankton, Yankton County, SD. South bound traffic is on the bottom and north bound traffic is on the top. Seven steel-girder spans on the north and 12 on the south. The vertical-lift span was deactivated in 1983. (N42 51.856 W97 23.636) Photo 6-19-02.