Located at Fennimore is a 30" gauge Godchaux Sugar Porter 2-6-0 and a 16" gauge railroad.
The last Chicago & NW narrow gauge mogul is in Pioche, NV. Years ago I heard that a few miles of the Fennimore-Wisconsin River narrow gauge segment was intact, and even that the state built a brand new overpass for the line over one if its highways, even though the trains hadn't run for 50+ years. I believe this segment was not standard gauged due to curvatures and grades. There is also a small combine in existence at New Freedom.