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 564 Arizona State Route 564 State Route 564, also known as SR 564, is a state highway in northern Arizona serving Navajo National Monument. This highway travels from U.S. Route 160 to Betatakin Ruin; SR 564 derives its number from the former route number of the adjacent stretch of US 160, U.S. Route 164. SR 564 ends at Betatakin; smaller roads travel beyond to Keet Seel. SR 564 is a highway in northern Arizona that connects the Navajo National Monument with US 160. The southern terminus is located at an intersection with US 160 and BIA Route 41, a road maintained