(Maquoketa River, 81', 1904) across North Fork Maquoketa River SW of New Vienna, New Wine Township, Dubuque County, IA. Main St. (becomes Petersburg Rd.) W. 0.75 miles from jct with Columbus St. in New Vienna, S. on Bockenstedt Rd. 0.5 miles to the bridge. (N42 32.437 W91 07.663) Photo by Jack & June Schmidt 6-23-12.