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
Queen Valley, Arizona Queen Valley, Arizona Queen Valley is a census-designated place (CDP) in north central Pinal County, Arizona. The population was 820 at the 2000 census. Queen Valley is located at . at an elevation of 2000 feet along the south side of the west flowing Queen Creek. The Tonto National Forest boundary and Comet Peak (2681 ft.) lie 1.5 miles to the east. The dam for the Whitlow Ranch Flood Control Basin is one mile to the east. Florence Junction lies to the southwest along US Route 60 and Queen Valley Road connects Queen Valley with US 60 two miles east