Altamont Pass

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Altamont Pass

Wind turbines at Altamont Pass
Elevation 1009 ft. / 308 m[dubious ]
Location California, Flag of the United States United States
Coordinates 37.732389° N 121.652416° W
Traversed by I-580,[dubious ] Union Pacific Railroad

Altamont Pass (el. 755 ft. / 230 m) is a pass in Northern California, United States, located in the Diablo Range between Livermore in the Livermore Valley and Tracy in the San Joaquin Valley. [1]

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 Pleasanton, Fremont, and San Jose. The abandoned right-of-way was used by Southern Pacific, which is now part of Union Pacific.

The pass is known for the Altamont Pass Wind Farm, one of the earliest in the United States.

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