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The Tehachapi Railroad Loop Still Powers California Trade | Lost LA

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429 views59likes8:59PBSSoCalOriginal Release: 2026-07-22

The Tehachapi Loop, built in 1876 by engineer William Hood, is a circular railroad track that allows trains to climb nearly 4,000 feet through the Tehachapi Pass by looping over themselves, solving the challenge of steep mountain grades that would otherwise cause trains to slip or lose braking power; this engineering marvel was crucial for connecting Southern California to the national railroad network and played a pivotal role in Los Angeles' development.