In 1926 the Prescott to Flagstaff highway was State Route 79. In 1940 or 1941, it was changed to US 89A and remained so until US 89 south of I-40 was obliterated in 1992. Today it is State Route 89A and in places is also known as Historic 89A.
In 1926 the Prescott to Flagstaff highway was State Route 79. In 1940 or 1941, it was changed to US 89A and remained so until US 89 south of I-40 was obliterated in 1992. Today it is State Route 89A and in places is also known as Historic 89A.
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