| Section of Line | Opened | Closed | Notes |
|---|---|---|---|
| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | |
|---|---|---|---|---|---|---|
| Caerphilly West | ||||||
| Watford Crossing | ||||||
| Penrhos Junction | ||||||
| Interchange Sidings | ||||||
| P.C. & N. Jn., Pontypridd | ||||||