Three era's of Pennsylvanian Railroading in one photo. The stone column carried the railroad over the Conemaugh River until 1907, and a realignment and elevation increase necessitated a new arch bridge spanning the river. Until 1950 that is, another realignment, elevation increase and bridge was built coinciding with the Conemaugh River Dam and towers over all of them and is still in use today and carries the NS Conemaugh Line over the valley and Conemaugh River near Blairsville PA.
