| Junctions and other features | Running Lines | Stations, Signal Boxes and Junctions | Distance from Signal Box above | Loops and Refuge Sidings | Notes | |
|---|---|---|---|---|---|---|
| Maximum permissible speed 10 m.p.h. | ||||||
| — | ↕ | Quay Sidings | – | |||
 |
↕* | Penrhyn Siding Ground Frame | 1m 765yds | * Bethesda Junction is staff station for branch. | ||