#transbay_tube

Transbay Tube

Underwater rail tunnel under San Francisco Bay

The Transbay Tube is an underwater rail tunnel that carries Bay Area Rapid Transit's four transbay lines under San Francisco Bay between the cities of San Francisco and Oakland in California. The tube is 3.6 miles (5.8 km) long, and attaches to twin bored tunnels. The section of rail between the nearest stations totals 6 miles (10 km) in length. The tube has a maximum depth of 135 feet (41 m) below sea level.

Tue 13th

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