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
Arizona State Route 143 Interstate 10 and US 60 between the Mini Stack and the Broadway Curve, adding to additional traffic overload and safety issues at the interchange with SR 143/I-10/US 60. The speed limit on I-10 throughout the city of Phoenix is currently . Many other area freeways have limits of , notable exceptions being the Sky Harbor Expressway with , Arizona 51 south of Glendale Rd with 55 mph, and Interstate 17 with . Arizona State Route 143 Arizona State Route 143, also known as SR 143 and the Hohokam Expressway, is a north–south and access-controlled freeway in Maricopa County, Arizona, that