Rhondda Valley Branches
Dates
| / /1800 | [Rhondda Valley Branches] ([Taff Vale Railway]) Extension to Maerdy opened by buying a private line from Ferndale to Maerdy. |
| / /1849 | [Rhondda Valley Branches] ([Taff Vale Railway]) Extended from Porth to Dinas. |
| /12/1849 | [Rhondda Valley Branches] ([Taff Vale Railway]) Extended from Porth to Ynyshir. |
| / /1856 | [Rhondda Valley Branches] ([Taff Vale Railway]) Extension to Ferndale opened. |
| 07/08/1856 | [Rhondda Valley Branches] ([Taff Vale Railway]) Extension to Treherbert opened. |
| 04/02/1861 | [Rhondda Valley Branches] ([Taff Vale Railway]) Pontypridd to Ystrad opened to passengers. |
| / /1863 | Pwllyrhebog Branch, Rhondda Valley Branches (Taff Vale Railway) Opened from Tonypandy to Blaenclydach Goods. The line was worked by specially designed 0-6-0 tank engines, of 1884, which were safe to work on the incline. The incline was also cable operated. |
| 07/01/1863 | [Rhondda Valley Branches] ([Taff Vale Railway]) Ystrad to Treherbert opened to passengers. |
| /06/1876 | [Rhondda Valley Branches] ([Taff Vale Railway]) Porth to Maerdy opened to passengers. |
| / /1889 | Pwllyrhebog Branch, Rhondda Valley Branches (Taff Vale Railway) Extended to Pwllrhebog Colliery by buying its railway. |
| / /1900 | [Rhondda Valley Branches] ([Taff Vale Railway]) Introduce steam railcars to compete with buses. |
| 01/07/1951 | Pwllyrhebog Branch, Rhondda Valley Branches (Taff Vale Railway) Closed. |
| 15/06/1964 | [Rhondda Valley Branches] ([Taff Vale Railway]) Porth to Maerdy closed to passengers and line singled. |
| / /1973 | [Rhondda Valley Branches] ([Taff Vale Railway]) Singled from Cwmparc to Treherbert. |
| / /1981 | [Rhondda Valley Branches] ([Taff Vale Railway]) Porth to Cwmparc singled. |
