This is the old Santa Fe line over Raton Pass. The line has not been used for freight since 2004. Amtrak leases the line and runs one passenger train a day in each direction. Semaphores are in operating condition. These three are at the south end of the Levy Siding off I-25 south of Raton about sixty miles. As far as I know the Raton line has the last operational Semaphores in the US.
...Rock Island....Erie Lackawanna....even some UP....some other stuff....that I remember even if I didnt' see them in the locales that some of these photos were taken at.....