Rhyndaston Tunnel

The Rhyndaston Tunnel is a 955-metre-long (3, 133 ft), 1-in-40-grade (2.5%) railway tunnel in southern Tasmania. The northern end of the tunnel is 72.5 kilometres (45.0 mi) from the Hobart railway yards. It was built as part of the Tasmanian Main Line Company's track from Hobart to Western Junction which was completed in 1876.

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Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

Other tunnels in Australia

Delaware Aqueduct United States · 137 km Päijänne Water Tunnel Finland · 120 km Orange–Fish River Tunnel South Africa · 82.8 km Ishikawa Tunnel Japan · 78.5 km Brenner Base Tunnel Austria · 64 km Mont d'Ambin base tunnel France · 57.5 km Gotthard Base Tunnel Switzerland · 57.09 km Hong Kong–Zhuhai–Macau Bridge China · 55 km