The Ironton Railroad became part of which Class 1 Railroad Corporation?
Ironton Railroad:  Much of the railroad had already been abandoned when it became part of Conrail in 1976, and the last of its trackage was removed in 1984. Conrail: Conrail, the Consolidated Rail Corporation, (reporting mark CR) , was the primary Class I railroad in the Northeastern United States between 1976 and 1999, when its routes were split between the CSX Corporation and Norfolk Southern Railway.
Conrail