The northern terminus of the highway continues north into the United States at Douglas, Arizona as U.S. Route 191.
The wash drains into the southern region of the slightly north-west by due south Sulphur Springs Valley, east of north-south running U.S. Route 191 and the small communities of Elfrida, McNeal, and Sunizona.
Its northern terminus at the international border is called Port Morgan, and the road continues into Saskatchewan as Highway 4 toward Swift Current.
•
The route between Springerville and Morenci was designated a National Scenic Byway and given the name of Coronado Trail Scenic Byway, as this approximates the path taken by Francisco Vásquez de Coronado between 1540 and 1542.
Wilson Arch, also known as Wilson's Arch, is a natural sandstone arch in southeastern Utah along U.S. Route 191 located 24 miles south of Moab.
U.S. Route 66 | U.S. Route 1 | U.S. Route 6 | U.S. Route 101 | Route 66 | U.S. Route 30 | New Jersey Route 4 | European route E65 | U.S. Route 40 | California State Route 1 | U.S. Route 1 in Maine | Pennsylvania Route 309 | European route E18 | U.S. Route 23 | European route E4 | U.S. Route 9 in New York | U.S. Route 11 | Pennsylvania Route 82 | European route E70 | U.S. Route 90 | U.S. Route 75 | U.S. Route 61 | U.S. Route 60 | Pennsylvania Route 73 | New York State Route 32 | European route E55 | U.S. Route 80 | U.S. Route 71 | U.S. Route 51 | U.S. Route 22 |
Shortly after following South Navajo Boulevard, however, US 180 follows a South-Southeast route, running by the Petrified Forest National Park and continuing South-Southeast to and through a small branch of the Zuni Indian Reservation, to St. Johns, Apache County, Arizona where it meets U.S. Route 191.