Amtrak On The Selkirk Bypass Track. As part of the process of requalifying crews over this territory for contingency planning, CSX Train P939 with AMTK 87 (P42DC) took the bypass tracks around CSX Selkirk Yard in Selkirk, New York on Thursday, June 29, 2023. This route, which would take potential detour Amtrak passenger trains over the CSX Selkirk Branch from the connection with the Amtrak/CSX Post Road Branch in Castleton-On-Hudson, New York to Hoffmans, New York and the CSX Mohawk Sub has not used end to end by passenger trains in the modern era, though sections have been used as the need arises. The train is double ended to facilitate changing directions during this exercise. In the background, a pair of CSX standard cabs switches out the yard, including distinctive cars from "Cardella", a New Jersey C&D customer that is known for branding its cars.