[20] Further restructures in 1996, 2001 and 2003 resulted in the establishment of the RailCorp, the agency currently responsible for the Sydney suburban and interurban rail network and rural passenger services, and for providing government and commercial freight operators with access to the rails of the Sydney metropolitan area.

On 1 July 2013, the operational responsibilities of RailCorp were transferred to NSW TrainLink and Sydney Trains.

[21][22] The agency built all of their track to the 4 ft 8+1⁄2 in (1,435 mm) standard gauge and ran its first official passenger train on 26 September 1855, between the Sydney terminal (just south of the current Central) and Parramatta junction (just past Granville) railway stations.

It operated several power stations, notably at Ultimo, White Bay, Lithgow, and Zaara Street, Newcastle, until its generation and transmission assets were taken over by the Electricity Commission of New South Wales, on 1 January 1953.

[23] In 1936, the company owned 1187 locomotives, 457 railcars, 1445 coaches, 172 brake vans and 22,068 goods wagons.