Arizona State Route 61 as New Mexico State Road 53. Arizona State Route 61 State Route 61, also known as SR 61, is a highway in northern Arizona running generally southwest to northeast, from its southern terminus at U.S. Route 60 east of Show Low to the New Mexico border at Zuni, where it becomes New Mexico State Road 53. Parts of this route, particularly near St. Johns, overlap U.S. Route 180 and U.S. Route 191. The southern terminus of SR 61 is located at a junction with US 60 east of Show Low. From here, the highway heads towards the northeast towards an
Interstate 10 in Arizona were laid out along railroad tracks, and US 60/US 70 was routed mostly parallel to the Santa Fe rail tracks east of Wickenburg, and the Arizona and California Railway west to Vicksburg. The two old federal routes then struck west across the desert and state line, picking up the Southern Pacific mainline at Indio, California, and I-10 overlies the old roads most of that distance. Moving east from the California line at Ehrenburg, I-10 follows the old route of US 60/US 70 for the first east from Blythe, California. In 1960, this western-most stretch of I-10 was built from near