(North Liberty #3) W. of North Liberty, Madison Township, Johnson County, IA. 250th St. E. 0.25 miles from jct with I380 exit 4 W. of North Liberty, S. on Kansas St. 0.3 miles to the tower on the W. side of the road. (N41 44.915 W91 38.166) Photos by Jack & June Schmidt 6-16-12.