(Pike Creek, 103', 1955) across Pike W. of Martinton, Martinton Township, Iroquois County, IL. 2850N Rd. W. 2.5 miles from jct with IL1 just N. of Martinton, S. on 1850E 0.7 miles to the bridge. (N40 54.890 W87 46.804) Photos 5-28-10.