U.S. Route 191
[1] The highway then proceeds north past Bisbee Douglas International Airport passing through the hamlets of Elfrida and McNeal.[1][8] US 191 has a detached business route in Arizona, running from SR 80/Historic US 80 in Douglas, along Pan American Ave to the US Customs/Immigration Port of Entry at the border with Mexico.[9] Part of US 191 through the Navajo Nation is designated by the Arizona Department of Transportation as the Tse'nikani Flat Mesa Rock Scenic Road.Routes 6 and 50 as it joins Interstate 70 going due west through the town of Green River, home of the John Wesley Powell Museum.US 191 enters Wyoming near a geographical feature known as Minnie's Gap, just east of Flaming Gorge National Recreation Area.The route proceeds north through rugged desert country following an alignment mostly constructed during the 1970s, to a junction with Interstate 80 at Exit 99, just west of Rock Springs.Continuing through forested, mountainous country, the route passes through the John D. Rockefeller Jr. Memorial Parkway before ending at the South Entrance of Yellowstone National Park.The highway heads north, running concurrently with US 287 for eight miles (13 km) before veering slightly east and entering Yellowstone.US 191 continues northward through Yellowstone, traversing forested, mountainous terrain and briefly looping into the state of Wyoming, before leaving the park in the upper reaches of the Gallatin River canyon.The road travels through hilly ranch country near the eastern edge of the Crazy Mountains to Harlowton, where US 191 is briefly concurrent with US 12.Utah and Wyoming lobbied AASHTO to create a single highway that would connect several National Parks in their states to facilitate tourism.[12] Although it became part of US 191 in 1981, the American Association of State Highway and Transportation Officials still lists it in their latest log (1989), with a short independent section in Rock Springs between former US 30 (now US 30 Business) and I-80.A combination of new construction and the upgrading of county roads created a more direct route between Interstate 80 in Wyoming and Flaming Gorge Reservoir.The state wished to remove the US 666 designation from within Arizona, due to public concerns relating to the biblical reference to the number "666".
US 91SR 80Douglas, AZWillcox, AZSanders, AZUS 491Monticello, UTUS 50Green River, UTPrice, UTUS 40DuchesneVernal, UTUS 30Rock Springs, WYUS 14US 16US 20Yellowstone Nat'l. ParkBozeman, MTMalta, MTHighway 4Canada–US borderLoring, MTUnited StatesArizonaWyomingMontanaUnited States Numbered Highway SystemSpecialDividedNational Forest Scenic BywayBlanding, UtahU.S. Route 91Douglas, ArizonaMexican borderYellowstone National ParkLoring, MontanaU.S. Route 191 in ArizonaCochise County, ArizonaArizona State Route 80Historic U.S. Route 80DouglasBisbee Douglas International AirportElfridaMcNealSR 181SunsitesCochiseInterstate 10WillcoxSR 186Willcox I-10 Business LoopGraham CountyUS 70SaffordState Route 366SR 266SpringervilleMorenciNational Scenic BywayFrancisco Vásquez de CoronadoCanyon de Chelly National MonumentNavajo NationHistoric US 80Arizona Department of TransportationU.S. Route 191 in UtahNationalUtah Scenic BywaysBlandingMonticelloSan Juan CountyGrand CountyGreen RiverWellingtonHelperProvo, UtahGrand Junction, ColoradoCanyonlands National ParkArches National ParkBears Ears National MonumentDead Horse Point State ParkFlaming Gorge ReservoirFlaming Gorge National Recreation AreaInterstate 80Rock SpringsconcurrentUS 187FarsonPinedaleUS 189Bridger-Teton National ForestBondurantUS 26US 89Snake RiverJacksonGrand Teton National ParkUS 287John D. Rockefeller Jr. Memorial ParkwayU.S. Route 191 in MontanaWest YellowstoneGallatin RiverBig SkyGallatin Gateway, MontanaBozemanBig TimberCrazy MountainsHarlowtonUS 12Montana Highway 3LewistownUS 87Montana 200wrong-way concurrencyMissouri RiverCharles M. Russell National Wildlife RefugeSwift CurrentIdaho Falls, IdahoWest Yellowstone, MontanaU.S. Route 20Bozeman, MontanaBrigham City, UtahState Route 13frontage roadInterstate 15