State Route 78 (Arizona–New Mexico) State Route 78 (Arizona–New Mexico) Arizona State Route 78 (SR 78) and New Mexico State Road 78 (NM 78) are a pair of adjoining state highways located in eastern Arizona and western New Mexico linking U.S. Route 191 (US 191) and Arizona State Route 75 near Greenlee County Airport to US 180 northwest of Cliff, New Mexico. It is also known in its Arizona stretch as Mule Creek Road. The western terminus of SR 78 is located at a junction with US 191 and SR 75 at Three Way, Arizona near Greenlee County Airport. The highway heads northeast from this
Arizona State Route 177 Arizona State Route 177 State Route 177 or SR 177 runs in a north–south direction from Superior, Arizona to Winkelman, Arizona. It ends at two junctions, US 60 to the north and State Route 77 to the south. The southern half of this road runs alongside the Gila River and the Copper Basin Railroad. The road passes through or near the towns of Kelvin, Riverside, Kearny and Hayden. This road passes by the copper mines in eastern Pinal County. It is a spur road of Arizona State Route 77. The southern terminus of SR 177 is located at an intersection