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| Section | Opened | Closed | Usage | ||
| Werris Creek - Breeza | 25-Mar-1879 | general | |||
| Breeza - Gunnedah | 11-Sep-1879 | general | |||
| Gunnedah - Boggabri | 11-Jul-1882 | general | |||
| Boggabri - Narrabri South Junction | 1-Oct-1882 | general | |||
| Narrabri South Junction - Moree | 1-Apr-1897 | general | |||
| Moree - Garah | 29-Sep-1913 | general | |||
| Garah - Weemelah | 7-Dec-1914 | general | |||
| Weemelah - Mungindi | 7-Dec-1914 | 11-Jan-1974 | general |
