Fort Mason Tunnel

Fort Mason Tunnel is an abandoned single-track railway tunnel in San Francisco which runs under a small hill upon which sits a portion of the old Fort Mason. The tunnel was constructed in 1913 and opened to rail traffic in 1914. The east portal is near the north end of Van Ness Avenue; the west portal feeds onto Marina Boulevard at Laguna Street.

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

Other tunnels in United States

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