(Design #2) NW of Coralville, Clear Creek Township, Johnson County, IA. Coral Ridge Av. N. 1.0 miles from jct with I80 exit 240, W. on Oakdale Blvd 200', N. on unnamed road 0.2 miles to the tower to the W. (N41 42.700 W91 36.768) Photos by Jack & June Schmidt 6-17-12.