List of Montana numbered highways

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Map of main highways (Interstate and U.S.)

The following is a list of Montana's numbered highways.

Interstate highways[edit]

Number Length (mi)[1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed
I‑15 396.03 637.35 I-15 near Monida Hwy 4 at Sweetgrass
I‑90 551.68 887.84 I-90 near Mullan, ID I-90 / US 87 near Ranchester, WY
I‑94 249.15 400.97 I-90 at Billings I-94 near Beach, ND
I‑115 1.19 1.92 I-15 / I-90 in Butte Downtown Butte
I‑315 0.83 1.34 I-15 / US 89 / MT 200 in Great Falls Downtown Great Falls

U.S. highways[edit]

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 2 667 1,073 US 2 west of Troy US 2 east of Bainville 1926 current
US 10 700 1,100 US 10 near Mullan, ID US 10 near Beach, ND 1926 1986 Mostly replaced by I-90 and I-94
US 10A 62 100 Gregson Drummond 1936 1986 Replaced by MT 1
US 10A 142 229 De Smet US 10A near Heron 1941 1967 Replaced by MT 200
US 10N 112 180 Three Forks Garrison 1930 1959 Replaced by MT 287 and US 12
US 10S 115 185 Three Forks Garrison 1930 1959 Became mainline US 10
US 12 597 961 US 12 near Lolo Hot Springs US 12 near Marmarth, ND 1926 current
US 20 10 20 US 20 near West Yellowstone Yellowstone National Park entrance at West Yellowstone 1940 current
US 87 440 710 I-90 / US 87 near Ranchester, WY US 2 at Harve 1926 current
US 87E 311 501 Armington US 87E near Ranchester 1926 1934 Became mainline US 87
US 87W 209 336 Armington Yellowstone National Park near Gardiner 1926 1934 Replaced by US 89
US 89 404 650 Yellowstone National Park near Gardiner Hwy 2 near Carway, AB 1934 current
US 91 396 637 US 91 near Monida Hwy 4 at Sweetgrass 1926 1980 Replaced by I-15
US 93 286 460 US 93 at Lost Trail Pass BC 93 at Roosville, BC 1926 current
US 191 438 705 Yellowstone National Park at West Yellowstone Hwy 4 north of Loring 1926 current
US 212 322 518 Yellowstone National Park at Northeast entrance
US 212 south of Red Lodge
US 212 near Cooke City
US 212 near Alzada
1939 current
US 287 282 454 Yellowstone National Park entrance at West Yellowstone US 89 at Choteau 1965 current
US 310 55 89 US 310 / WYO 789 near Frannie, WY I-90 Bus at Laurel 1926 current
US 312 225 362 US 12 in Billings US 212 at Broadus 1959 1981 Replaced by MT 59 and US 10

Primary state highways[edit]

Secondary state highways[edit]

Montana Secondary Highway 486 at Whitefish
Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed
S-201 69.511 111.867 MT 13 near Vida MT 200 in Fairview 1952 current
S-202 2.662 4.284 MT 23 near Sidney North Dakota state line 1977 current
S-203 11.983 19.285 S-269 north of Stevensville US 93 in Florence 1976 current
S-204 1.596 2.569 Milk River crossing US 2 at Dodson 1993 current
S-205 24.361 39.205 I-90 at Three Forks S-411 near Bozeman 1993 current
S-206 9.741 15.677 MT 35 east of Evergreen US 2 near Columbia Falls 1993 current
S-207 21.862 35.183 US 87 / MT 3 / MT 200 near Moccasin MT 81 in Denton 1993 current
S-208 9.412 15.147 US 191 in Phillips County Whitewater 1978 current
S-209 4.861 7.823 MT 35 at Big Fork MT 83 near Ferndale 1945 current
S-210 9.855 15.860 MT 200 at Missoula I-90 / US 12 at Clinton 1976 current
S-211 9.757 15.702 Lake County US 93 in Ronan 1945 current
S-212 17.285 27.818 MT 200 near Dixon US 93 near Charlo 1945 current
S-213 39.513 63.590 US 2 in Cut Bank Hwy 62 at the Port of Del Bonita 1945 current
S-214 32.828 52.832 S-213 near Cut Bank I-15 at Sweet Grass 1945 current
S-215 21.299 34.277 S-213 near Cut Bank I-15 near Oilmont 1945 current
S-217 14.087 22.671 S-343 in Toole County S-409 at Whitlash 1976 current
S-218 29.253 47.078 I-15 Bus in Conrad S-225 in Teton County 1945 current
S-219 19.818 31.894 US 89 near Pendroy I-15 Bus near Conrad 1945 current
S-220 17.940 28.872 S-221 near Choteau S-219 east of Pendroy 1945 current
S-221 24.444 39.339 US 89 at Choteau I-15 near Dutton 1945 current
S-222 3.589 5.776 I-15 / S-278 south of Dillon I-15 Bus at Dillon 1976 current
S-223 52.901 85.136 US 87 / MT 80 near Fort Benton US 2 in Chester 1945 current
S-224 18.950 30.497 US 2 near Joplin Local road in Liberty County 1945 current
S-225 56.220 90.477 Great Falls city limits S-366 in Toole County 1945 current
S-226 14.560 23.432 Eden Great Falls city limits 1945 current
S-227 16.756 26.966 S-226 near Eden US 87 / US 89 / MT 3 / MT 200 near Great Falls 1945 current
S-228 42.633 68.611 US 87 / US 89 / MT 3 / MT 200 near Great Falls MT 80 near Fort Benton 1945 current
S-229 2.592 4.171 Helena city limits S-279 near Helena 1976 current
S-231 5.674 9.131 Helena city limits S-279 near Helena 1983 current
S-232 42.784 68.854 Havre city limits Hwy 41 at the Port of Wild Horse 1945 current
S-233 30.482 49.056 S-232 near Havre Hwy 21 at the Port of Willow Creek 1945 current
S-234 21.662 34.862 Rocky Boys Indian Reservation Havre city limits 1945 current
S-235 5.610 9.028 MT 85 near Bozeman Bozeman city limits 1983 current
S-236 88.235 142.000 US 191 at Hilger US 87 at Big Sandy 1945 current
S-238 68.888 110.864 US 2 / MT 3 in Ryegate US 89 / MT 200 in Lewiston 1945 current
S-239 11.666 18.775 Utica US 87 / MT 3 / MT 200 in Hobson 1946 current
S-240 25.333 40.770 Cleveland US 2 in Chinook 1945 current


Former highways[edit]

See also[edit]

References[edit]

  1. ^ "Route Log & Finder". FHWA. November 2002. Retrieved 2008-10-21.