FACT NEXUS on Instagram: "The 'Tehachapi' Loop was built as an ingenious spiral track by Southern Pacific Railroad in 1876, designed by William Hood to help trains climb the steep Tehachapi Mountains with a manageable grade (2.2%), allowing them to gain 77 feet in elevation over a 3,779-foot circular path through solid rock and tunnels. Primarily with help from Chinese laborers, connecting the San Joaquin Valley to the Mojave Desert for the first railroad linking LA and SF. #science #technology

WealthX on Instagram: "Most people drive past it without knowing what they're missing. The Tehachapi Loop is a railway spiral that makes trains pass over themselves to climb mountains. Built in 1876, it's a 0.73-mile curve that gains 77 feet in elevation while keeping the grade manageable. Long freight trains literally cross over their own tracks. The engine passes above the rear cars of the same train. Nearly 40 trains use this loop every single day. A 150-year-old solution that still works fla

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