Iron bridge (Sangamon River, 170', closed) across Sangamon River S. of Illiopolis, Illiopolis Township, Macon County, IL. CR21E (Dye Rd.) S. 1.0 miles from jct with I72 exit 122 S. of Illiopolis, SE on Riverside Rd. 0.2 miles to the bridge. (11-9-07, N39 49.223 W89 15.145)