US 40 west end, 1975-present
near Park City (Silver Creek Jct.)
US 530 west end, 1926-1939
near Park City (Kimball Jct.)
US 530 east end, 1926-1939
Echo Jct.
US 91 south end, 1974-present
Brigham City
US 191 south end, 1937-1962
Brigham City
US 191 south end, 1962-1972
Tremonton
US 189 north end, 1990s-present
Heber City (there is an "End US 189" sign here, but AASHTO has never been asked to decommission US 189 between here and the Wyoming border, and in fact UDoT's own records indicate that US 189 ends at the same place US 40 ends, near Park City.)
US 189 south end, 1939-1951
Provo
US 189 south end, 1951-present
Provo
US 89 north end, 1926-1934
Spanish Fork
US 189[I] north end, 1930-1939
Nephi
US 189[I] south end, 1930-1939
near Moroni
US 50 west end, 1926-1928
Thistle Jct. (Old)
Common: US 450-160-163
Crescent Jct. US 450 west end (1930s-1939); US 160 west end (1939-1970); US 163 north end (1970-1983).
US 450 west end, 1926-1930s
Valley City
Common: US 491-666-163
Monticello. US 666 north end (1970-2003); US 163 north end (1983-1985); US 491 north end (2003-present)
US 163 north end, 1985-present
near Bluff (UDoT has signed this as the endpoint since 1985, but they didn't obtain AASHTO approval until 2008)