Llantrisant and Taff Vale Junction Railway
In time the Canal became overwhelmed by the volume of traffic, and encouraged by the successful opening of railways with more advanced technology than the horse tramways of previous years, the Taff Vale Railway was promoted. It was authorised by Parliament in 1836 and it opened between Merthyr and Cardiff docks in 1841. The line passed close to the Maesmawr workings but did not make a connection.
Newport, Abergavenny and Hereford Railway
On 15 June 1964 the passenger service on the Taff Vale Extension route was ended. The line was closed entirely from Hafodyrynys to Panteg Junction on 31 March 1979.