The interchange has partially collapsed twice due to earthquakes; the 1971 Sylmar earthquake and the 1994 Northridge earthquake.
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In Rosamond, the highway passes close to Edwards Air Force Base, which was often used as one of the main landing strips for NASA's Space Shuttle, and as the base for the X-15 and many other air and spacecraft.
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The northern portion, from Vincent (south of Palmdale) to Route 395, is legislatively named the Aerospace Highway, as the highway serves Edwards Air Force Base, once one of the primary landing strips for NASA's Space Shuttle.
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Route 14 was part of U.S. Route 6 prior to truncation in 1964, when U.S. 6 was a coast-to-coast route from Long Beach to Provincetown, Massachusetts.
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