(40', 15-28-a) across a creek SW of Dyersville, North Fork Township, Delaware County, IA. US20 W. 3.9 miles from jct with IA136 (9th St.) on the S. side of Dyersville, S. on 310th Av. 2.7 miles to the bridge on the W. side of the road at 2463. (N42 25.846 W91 11.543) Photos by Jack & June Schmidt 6-22-12.