South of Chicago Union Station is the engine house where Amtrak maintains locomotives assigned to trains originating in Chicago.
I’ve passed by the facility numerous times on an Amtrak train, but never been inside of it. It is not the type of place that often offers public tours.
I got this grab shot from aboard the Carbondale, Illinois, to Chicago Saluki as it passed by the engine house on the St. Charles Air Line.
Other than routine servicing between runs, the engine house has facilities to perform maintenance, although the heavy overhauls are done at Beech Grove shops near Indianapolis.