PSAP Harbor Subdivision
PSAP’s Harbor Subdivision extends 23.9 miles from Elma to Hoquiam, Washington, on former Northern Pacific tracks.
Radio Channel 91 (161.475)
| MP | Location | Junctions | Latitude, Longitude |
| 48.7 | Elma | Centralia Sub, Bangor Sub | 47.0078, -123.4040 |
| 57.0 | Montesano | 46.9769, -123.6037 | |
| 68.6 | Drawbridge 68 | 46.9746, -123.8103 | |
| 69.0 | Aberdeen | 46.9713, -123.8165 | |
| 72.1 | Hoquiam Drawbridge 72.2 | 46.9719, -123.8766 | |
| 72.6 | Hoquiam | 46.9735, -123.8879 |