The most notable reroutings from the original corridor are: 1) the section from Moyie Springs, Idaho to just inside the Montana border, which once ran much further north, as seen on the 1937 map of the area (Old US 2 N. intersects today's US 2 about 2 miles east of the state line); 2) passing north of Kila; 3) a route swap with S-206 between Evergreen and Columbia Falls in 1983 (as seen in the 1985 state map) ; 4) widening the highway to three or four lanes between Hungry Horse and West Glacier in 1987 (as seen on page 35 of the 2013 road log); and 5) construction of a more direct route between East Glacier and Browning over the Two Medicine River (which eliminated the concurrency with US 89 between Kiowa and Browning).