Santa Susana Tunnel

The Santa Susana Tunnel is a railroad tunnel that connects the Simi and San Fernando valleys in Southern California. The tunnel is credited with saving considerable time and distance between San Francisco and Los Angeles. It is 7,369 feet (2, 246 m) long and runs through the Simi Hills and Santa Susana Mountains. The tunnel is located beneath the Santa Susana Pass.

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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