(Tremaine, 186', 1902) across Boone River S. of Webster City, Independence Township, Hamilton County, IA. Superior St. (becomes Briggs Woods Rd.) S. 4.5 miles from jct with US20 S. of Webster City, W. on 280th St. 0.75 miles to the bridge. (N42 23.195 W93 48.536) Photo by Jack & June Schmidt 7-11-12.