Transbay Tube
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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 long, and attaches to twin bored... Wikipedia
Opened: September 16, 1974
Start: Embarcadero station, San Francisco
Highest elevation: Sea level
Line length: 3.6 mi (5.8 km)
Location: San Francisco Bay, California, US
No. of tracks: 2