U.S. Highway 191 is a spur of former U.S. Highway 91 that has two branches. The northern branch currently runs for 440 miles from Loring, Montana at the Canadian border to the northern part of Yellowstone National Park. The southern branch currently runs for 1,465 miles from the southern part of Yellowstone National Park to Douglas, Arizona at the Mexican border. It passes through the states of Montana, Wyoming, Utah, and Arizona, and through Grand Teton National Park and Arches National Park.

The original route comissioned in 1926 ran from Idaho Falls, Idaho to Malta, Montana. It has been truncated and extended numerous times. In 1999 it became the last U.S. highway to run from border to border, with the extension from Malta to the Canadian border.

See Also

List of United States Highways

External link

• Photographic virtual tour of U.S. Highway 191. (http://www.UntraveledRoad.com/Categories/Highways/USHighway191.htm)