U.S. Route 191 in Arizona

The national southern terminus of US 191 is located at an intersection with SR 80 west of Douglas, in Cochise County. It heads north from this junction, past Bisbee Douglas International Airport and then through the unincorporated communities of McNeal and Elfrida before passing by Sunizona and the western terminus of SR 81, which provides access to Chiricahua National Monument. The road curves west and heads toward Sunsites, where it turns to the northwest and passes by the community of Cochise with a bridge over the Union Pacific Railroad. Continuing northwest, US 191 meets Interstate 10 at Exit 331, a trumpet interchange, and has a concurrency with I-10 for about 21 miles (34 km). Heading northeast, I-10/US 191 passes around Willcox, with three exits serving the town: Exit 336, which is the southwestern end of the Willcox I-10 Business Loop; Exit 340, which is the northern terminus of SR 186; and Exit 344, which serves as the northern end of the Business Loop.

Northeast of Willcox, US 191 leaves I-10 at Exit 352 and heads north toward Safford, leaving Cochise County and entering Graham County along the way. Just north of I-10, US 191 passes through an intersection with Page Ranch Road, officially designated as US 191 Wye (see § U.S. 191 Wye route, below). This provides a shortcut for traveling between Bowie and Safford, as the mainline of US 191 is curved toward the west near I-10. Going toward Safford, the eastern terminus of two state routes intersect the route, namely SR 266, which provides access to Fort Grant, and SR 366 in Swift Trail Junction, which climbs up to the summit of Mount Graham and provides access to Mount Graham International Observatory. Arriving in Safford, US 191 turns east at an intersection with 5th Street (US 70), where its 10 miles (16 km) concurrency with US 70 begins.

Traveling east from Safford, US 70/US 191 passes by the communities of Solomon and San Jose before US 191 turns northeast to split from US 70. The route heads toward Three Way, passing through the Black Hills and entering Greenlee County. At Three Way, US 191 turns to the north, but the intersection is the northern terminus of SR 75, which heads toward Duncan, and the western terminus of SR 78, which heads into New Mexico toward Mule Creek. Heading north, US 191 is a divided highway for about 5 miles (8.0 km) until it arrives in Clifton, the start of the road's designation as the Coronado Trail Scenic Road (both an Arizona Scenic Route and a National Scenic Byway). This scenic road approximates the route taken by Francisco Vázquez de Coronado between 1540 and 1542. At the intersection with Zorrilla Street in Clifton, the US 191 designation temporarily ends and the road continues as US 191 Temporary through the Morenci mine (see § Morenci mine temporary route, below).

At the northern end of the Morenci mine, the road reacquires its US 191 designation and travels through the Apache–Sitgreaves National Forests, in which it enters Apache County. The road through the forests is dangerous with no shoulders and many hairpin turns along steep mountainsides. About 75 miles (121 km) through the forests, US 191 arrives in Alpine and intersects US 180, where their 56 miles (90 km) concurrency begins. Continuing through the forests, the road travels through the community of Nutrioso before leaving the Apache–Sitgreaves National Forests. Just after leaving the forests, US 180/US 191 turns north at a T-intersection, the eastern terminus of SR 260. About 2 miles (3.2 km) to the northwest, US 180/US 191 enters Springerville and turns to the west at another T-intersection, this time with Main Street, where a triple concurrency between US 60, US 180, and US 191 begins. This triple concurrency passes through Springerville and ends about 3 miles (4.8 km) northwest of Springerville, where US 180/US 191 turns north and the road continues west as US 60. The US 180/US 191 concurrency continues north for another 25 miles (40 km), intersecting former SR 81, which leads to Lyman Lake State Park before arriving in St. Johns as White Mountain Drive.

In St. Johns, US 180/US 191 intersects Commercial Street (SR 61), where the US 180/US 191 concurrency ends but a concurrency with SR 61 begins. This concurrency leaves St. Johns and travels north for about 29 miles (47 km) until SR 61 turns to the northeast and heads toward Zuni, New Mexico. Continuing north, US 191 immediately enters the Navajo Nation and then travels another 24 miles (39 km) until it arrives at Interstate 40 in Sanders. Here, US 191 has a concurrency with I-40 for 6 miles (9.7 km) from Exit 339 to Exit 333 in Chambers, where US 191 continues north through the Navajo Nation, intersecting BIA Route 28 in Klagetoh before its arrival in Ganado, where a 6 miles (9.7 km) concurrency with SR 264 begins. From there, US /SR 264 heads west past Hubbell Trading Post National Historic Site and toward Burnside, where the concurrency ends at a roundabout junction with US 191, SR 264, and BIA Route 15.

At the roundabout, US 191 travels north to Chinle, where it intersects BIA Route 7, which provides access to Canyon de Chelly National Monument. Continuing north, the route intersects BIA Route 59 in Many Farms, BIA Route 12 in Round Rock, and BIA Route 35 in Rock Point, before arriving at a T-intersection with US 160 near Mexican Water. Here, US 191 shares the route with US 160 for about 2 miles (3.2 km) until it turns to the north for its final 5 miles (8.0 km) in Arizona, leaving the state at the Utah state line and entering San Juan County, heading toward Bluff.

U.S. Route 191 Business
Location	Douglas, Arizona
Length	1.15 mi[1] (1.85 km)
Existed	1992–present[3]

A map of the Douglas business route. The route is highlighted in red.

U.S. Business Route 191 (US 191 Bus.) is a business spur of US 191 located entirely within the city of Douglas, Arizona.[4] US 191 Bus. is 1.15 miles (1.85 km) long and acts as the main route into Agua Prieta in Mexico via the Douglas Port of Entry at the Mexico–United States border.[1][4] Despite being a special route of US 191, US 191 Bus. never intersects with its implied parent route and instead ends at Arizona State Route 80 (SR 80) and Historic US 80 approximately 1.5 miles (2.4 km) east of the US 191 southern terminus.[4][5] The route was previously designated as US 666 Bus. until 1992, when US 666 and all its related routes in Arizona were renumbered to extensions and special routes of US 191.[3]

US 191 Bus. begins at the Douglas port of entry. Heading northeast, US 191 takes on the name Pan American Avenue. The route is lined with several businesses and acts as the western boundary to downtown Douglas. Several large slag piles can be seen from US 191 to the west at the former location of the Douglas smelter. A number of warehouses and industrial structures are also located west of the highway. US 191 Bus. curves slightly in front of the Douglas Police Station (former train station) before terminating at an intersection with SR 80 and Historic US 80 16th Street and G Avenue. Westbound SR 80 provides a direct connection to US 191, which begins just over a mile west of town.[4][5]

Major intersections

The entire route is in Douglas, Cochise County.

mi[1]	km	Destinations[5]	Notes
0.00	0.00	Raul H. Castro Port of Entry	United States–Mexico border; road continues into Mexico as Avenida 3 (Panamericana), enters from Mexico as Calle Internacional
1.15	1.85	SR 80 / Historic US 80 to US 191 north	Northern terminus; highway continues east as SR 80 (Pan American Avenue north)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

U.S. Route 191 Wye (US 191Y) is an unsigned auxiliary route of US 191 that runs from exit 355 of I-10 to US 191; it is also known as Page Ranch Road. It serves as a shortcut for people traveling from westbound on I-10 to northbound on US 191 and from southbound on US 191 to eastbound on I-10.

Major intersections

The entire route is in Greenlee County.

Location	mi[1]	km	Destinations	Notes
Luzena	0.00	0.00	I-10 – Safford, El Paso	Southern terminus; I-10 exit 355; road continues as Page Ranch Road
​	3.51	5.65	US 191 – Safford, Willcox	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

U.S. Route 191T
Location	Morenci mine
Length	14.22 mi[1] (22.88 km)
Existed	1992–present[3]

U.S. Route 191 Temporary (US 191 Temp.) is the designation of 14.22 miles (22.88 km) of the route of US 191 through the Morenci mine.[1][6] The route was previously designated as US 666 Temp. until 1992, when US 666 and all its related routes in Arizona were renumbered to extensions and special routes of US 191.[3] This designation was created in 1974 for the rerouted section of the road, then US 666, that had to be moved farther away from the Morenci mine due to its growth.[7]

US 191 Temp. begins at Zorilla Street in Clifton. Heading west, US 191 Temp. travels through Clifton's Chase Creek District before ascending the side of the Chase Creek Valley. The road then turns around at the end of the valley with a hairpin turn, where the original routing of the road (then US 666) can be seen leaving the current roadway and heading toward the mine. The road continues to ascend the valley in a southern direction until it arrives in Morenci. Here, the route turns north at the intersection of Burro Alley and Coronado Trail. Originally, the route traveled straight at this intersection and went through Morenci, but a bypass was built in 1972.[8] After leaving Morenci, the road passes through the Morenci mine, where it travels through three short tunnels in total. After its exit from the mine, the US 191 Temp. designation ends and the road continues as US 191 toward Alpine.[6]

Major intersections

The entire route is in Greenlee County.

Location	mi[1]	km	Destinations	Notes
Clifton	163.95	263.85	US 191 south / Zorilla Street	Southern terminus; highway continues as US 191 south
​	179.36 173.00	288.65 278.42	US 191 north	Continuation beyond northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Route transition