Agua Fria Road is an approximately 2.3-mile rural highway located in Mariposa County. This highway corridor is one of the oldest identifiable roadways in the state as it once served the original Mariposa County seat of Aqua Fria. The community of Agua Fria was founded in 1849 by Sonoran Miners and became the first Mariposa County seat in February 1850. The County Seat was not long lived in Agua Fria as it would be moved to Mariposa in November 1851. The community of Agua Fria would burn during a fire in 1866 and was never rebuilt.
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