Porter Hollow Embankment and Culvert Sign, which reads: "The Grand Rapids and Indiana Railroad (GR&I) reached Algoma Township in 1867. A series of wooden trestles were built to cross Wicked Creek, later named Stegman Creek. In 1885, after repeated fires and floods, the GR&I hired James House to cut fieldstones from his farm and build this culvert to stabilize the trestle. Eventually, the GR&I abandoned the trestle and buried it intact within a wall of dirt above the culvert."