I came across these images of some remaining 3-rail trackage in Denver via the Narrow Gauge Discussion Forum (a 2013 discussion). One member claimed they were from the C&S narrow gauge, while another said, "I think that 3-rail track is from the tie plant in that area of North Denver." I assume that comment means that the track is not old C&S narrow gauge. Does anyone know the truth about these?
The original post describes the location as: "The crossing is located is located at West 56th Avenue. It is an industrial area off I-25 near a large store called Oak Express."