(Concrete) in Des Moines, Polk County, IA. 42nd St. N. 0.6 miles from jct with I235 exit 6 in Des Moines, W. on University Av. 0.4 miles (5 blocks), N. on 48th St. 0.9 miles to the tower on the W. side of the road. (N41 36.856 W93 41.034) Photo 4-29-04.