 The southern part was subsequently merged with Madras and Southern Mahratta Railway then with East Coast Railway zone of Indian Railways came into existence in its present form with effect from 1 April 2003. and then with South Coast Railway zone of Indian Railways came into existence in its present form with effect from 27 Feb 2019.The Bengal Nagpur Railway was nationalized in 1944.Eastern Railway was formed on 14 April 1952 with the portion of East Indian Railway Company east of Mughalsarai and the Bengal Nagpur Railway.In 1955, South Eastern Railway was carved out of Eastern Railway.