(Prairie Creek, 50', 1904) across Prairie Creek W. of Martinton, Iroquois County, IL. 2850N Rd. W. 4.0 miles from jct with IL1 just N. of Martinton, N. on N1700E Rd. 0.4 miles, W. on CR2900 0.9 miles, S. on CR1600E 1.0 miles, E. on CR2800N 0.4 miles to the bridge. (N40 55.034 W87 49.215) Photos 5-28-10.