U.S. Route 191 (
US-191) is a major north–south
state highway through the eastern part of the
U.S. state of
Utah. The present alignment of US-191, which stretches from
Mexico to
Canada, was created in 1981 through Utah. Previously the route had entered northern Utah, ending at
US-91 in
Brigham City, but with the completion of
I-15 it was truncated to
Yellowstone National Park and re-extended on a completely different alignment. In addition to a large portion of
US-163, this extension absorbed several state routes: SR-33, most of
SR-44, and SR-260.