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Kern County
Tehachapi Loop [Map] Tunnel under .73 mile loop crosses under itself on UP (former SP) RailroadOpen to trafficBuilt in 1876 by the SP Railroad to circumvent the extreme grade of the Tehachapi Mtns. In 1998 it was added as a Nat'l Historic Civil Enginnering Landmark
Tunnel 10 [Map] Tunnel on UP/BNSF railroads (formerly SP/ATSF)Open to trafficBuilt in 1876 by the SP Railroad