U.S. Route 191, is a main north-south state highway throughout the eastern division of the U.S. state of Utah. The current alignment of US-191, which stretches from Mexico to Canada, was created in 1981 through Utah.
Earlier the route had gone into northern Utah, ending at US-91 in Brigham City, but with the completion of I-15 it was shortened to Yellowstone National Park & re-extended on a completely different alignment. In adding up to a large portion of US-163, this extension absorbed some state routes: SR-33, most of SR-44, and SR-260.