| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | ||
|---|---|---|---|---|---|---|---|
| Up | Down | ||||||
| 1 | ↕ | Cefn Junction (Cardiff District) | - | ||||
| 2 | ↕ | Waterhall Sidings | 0m 1292yds | CL 32 | |||
| 3 | ↕ | Newlands | 2m 154yds | CL 60 | |||
| 4 | ↑ | ↓ | Margam Abbey Works East | 1m 220yds | |||
| 5 | ↑ | ↓ | Margam Abbey Works West | 0m 1018yds | |||
| 6 | ↑ | ↓ | Margam East | 0m 1540yds | |||
| 7 | ↑ | ↓ | Copper Works Junction | 1m 352yds | |||
| ↑ | - | Terminating at No. 7 Grid | |||||