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Altamont Pass

Older wind turbines, part of the Altamont Pass Wind Farm. California Zephyr at Altamont Pass, February 1970.

Altamont Pass, formerly Livermore Pass, is a mountain pass in the Diablo Range between Livermore in the Livermore Valley and Tracy in the San Joaquin Valley in Northern California. The pass carries Interstate 580, heavily congested by Central Valley suburbanization, Altamont Pass Road, which is the original alignment of US 50 before it was bypassed by the present I-580, and two railroad right-of-ways (ROWs).

Only one right-of-way is still in use: the old Western Pacific line, now owned by Union Pacific; it is today used for the Altamont Commuter Express, with service to Livermore, Pleasanton, Fremont, and San Jose. The abandoned right-of-way was used by Southern Pacific, which is now part of Union Pacific. This line was the Bay Area's original connection to the transcontinental railroad and was abandoned in 1984 in favor of trackage rights on the ex-Western Pacific line.

The Altamont Pass area was home to the Altamont Speedway from 1966 to 2008, which was known for being the site of the 1969 Altamont Free Concert, a large concert marred by violence. The pass is also known for the Altamont Pass Wind Farm, one of the earliest in the United States.



From the time of the California Gold Rush, what is now Altamont Pass was called Livermore's Pass after Robert Livermore the owner of the Rancho Las Positas and a way station near the Pass. After the railroad was built through the pass in 1869, Altamont, formerly The Summit, was established in 1872. Eventually the Pass took the name of the town.

See also

  • Altamont Pass Wind Farm
  • Mountain House


External links

de:Altamont Pass sv:Altamont Pass

Source: Wikipedia | The above article is available under the GNU FDL. | Edit this article

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