Opened from Rhymney Iron Works to the Monmouthshire Canal Tramway at Park Mile, south of Bassaleg. Gauge of 4 feet 2 inches. Engineer; George Overton.
Act passed to convert tramroad into a railway and modify levels and for a branch from Machen to the Rhymney Railway at Caerphilly.
Machen to Caerphilly partly opened. Rest of route opened as Caerphilly Branch (Brecon and Merthyr Railway).
|Rumney Railway, Brecon and Merthyr Railway
Rumney Railway purchased by the Brecon and Merthyr Railway.
|Deri Branch (Rhymney Railway)
Line opened from Bargoed North Junction to Deri. The Brecon and Merthyr Railway had running powers of this from Deri to the main line of the Rhymney Railway and from there to the junction with a spur from the Rumney Railway.
|Barry Dock and Railways
Connection made to the Rumney Railway at Barry Junction near Bedwas.
|Rhymney Valley Branch (Barry Dock and Railways)
Line extended from Penrhos Lower Junction to Barry Junction on the Rumney Railway of the Brecon and Merthyr Railway opened. Penyrheol Viaduct and Llanbradach Viaduct on the line opened.
Crash between passenger train and colliers train during single line working following a landslip. A passenger was killed.
|Barry Dock and Railways, Rumney Railway
Barry Junction renamed Duffryn Isaf.
Landslip closes line north of New Tredegar.
New Tredegar (excluded) to McLarens Colliery (excluded and also served by the Rhymney Railway) closed.
McLarens Colliery (excluded) to Rhymney Pontlottyn closed.
Singling of the line undertaken, progressing southwards from New Tredegar.
Closed to passengers.
Bedwas to Rhymney closed.
Line closed to passengers and goods.
Britannia Colliery (excluded, and south of Bargoed) to Bedwas Colliery (excluded) closed.
Bargoed to Britannia Colliery closed, coal worked by the National Coal Board over their private line to Bargoed Washery connected to the Rhymney Railway at Bargoed Pits Junction.
This line is divided into a number of portions.