(Visit Beloit) in Beloit, Rock County, WI. WI15/81 (Milwaukee Rd.) W. 0.6 miles from jct with I39 exit 185, S. (left) on Cranston Rd. 0.45 miles to the tower on the E. side of the road. (6-28-09, N42 31.089 W88 58.817) Photos by Mark & Gordie Comstock & Larry Baker.