Berkeley Hills Tunnel
The Berkeley Hills Tunnel is a tunnel which carries Bay Area Rapid Transit (BART) Yellow Line through the Berkeley Hills between Rockridge station and Orinda station.
East portal structure of the Berkeley Hills Tunnel | |
| Overview | |
|---|---|
| Other name(s) | Caldecott BART Tunnel |
| Line | Y Yellow Line |
| Location | Alameda County, California |
| Coordinates | Oakland portal: 37°51′05″N 122°14′17″W Orinda portal: 37°52′29″N 122°11′16″W |
| System | Bay Area Rapid Transit |
| Crosses | Berkeley Hills, Hayward Fault |
| Start | Rockridge Station, Oakland |
| End | Orinda Station, Orinda |
| No. of stations | None |
| Operation | |
| Work begun | 1965 |
| Constructed | drill-and-blast |
| Opened | May 21, 1973 |
| Owner | San Francisco Bay Area Rapid Transit District |
| Operator | San Francisco Bay Area Rapid Transit District |
| Character | Rapid transit |
| Technical | |
| Line length | 3.1 mi (5.0 km) |
| No. of tracks | 2 |
| Track gauge | 5 ft 6 in (1,676 mm) (Indian gauge) |
| Electrified | Third rail, 1000 V DC |
| Tunnel clearance | 16.8 feet (5.1 m) |
| Grade | 1.2% (2% max) |
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