extension was finished, US 191 reached Interstate 40 in Arizona. In Wyoming, the new US 191 absorbed what was U.S. Route 187, formed in 1926 as a branch from US 87W (now US 287) at Jackson Lake Junction, Wyoming south to US 30 in Rock Springs. 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. Through Utah, US-191 absorbed SR-33, SR-260, and most of SR-44. From Crescent Junction to Bluff was previously numbered U.S. Route 163, eliminating all but a short segment of that route. A new route was constructed for US 191 from Bluff, Utah to a junction with U.S. Route 160 in Arizona. The 1981 extension caused US 191 to enter Arizona for the first time in its history. Between US 160 and I-40 the highway absorbed the route of former State Route 63. Later extensions In 1992, Arizona requested a new number for its portion of US 666, arguing the road signs on this highway were the most frequently stolen in the state. As a result, US 191 was extended again to the Mexican border at Douglas, Arizona. In 1996, it became the latest U.S. highway to travel from border to border, with the extension from Malta, Montana to the Canada–US border, absorbing former Montana Secondary Highway 242. In 2003, New Mexico asked AASHTO to renumber its portion of US 666. This time, all of then US 666 was renumbered US 491, the x91 number was decided because the road meets US 191 in Monticello, Utah. Major intersections Southern segment Arizona in Douglas north-northwest of Cochise. The highways travel concurrently to northeast of Willcox. in Safford. The highways travel concurrently to San Jose. in Alpine. The highways travel concurrently to St. Johns. in Springerville. The highways travel concurrently through Springerville. in Sanders. The highways travel concurrently to Chambers. south-southeast of Mexican Water. The highways travel concurrently to southeast of Mexican Water. Utah in Bluff in Monticello west-southwest of Thompson Springs. I-70/US 50/US 191 travels concurrently to west of Green River. US 6/US 191 travels concurrently to north