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 181 Arizona State Route 181 State Route 181 (SR 181) is a highway in Cochise County, Arizona that runs from its junction with US 191 east of Pearce to the Chiricahua National Monument. It is an east–west route for the half east of Pearce, but becomes a primarily north–south route on the half approaching the monument. SR 181 serves primarily as an access to the monument, although it also services the settlement of Sunizona east of Pearce. The western terminus is located at US 191 east of Pearce. The highway heads east from this intersection through Sunizona where the highway briefly