| Montana US Highways |
Italics are used for Decommissioned Routes.
Description :
Runs from North Dakota border near Bainville to Idaho border near Troy
for 666 miles.
Multiplexes :
US 89 from Browning to 4 miles east of Browning
Junctions with other US and Interstate Routes :
US 191 at Malta
US 87 at 3 miles west of Havre
I-15 near Shelby (Exit 363)
US 89 near Browning
US 93 at Kalispell
Major Cities :
Malta, Havre, Shelby, Cut Bank, Kalispell
Business and Bypass Routes :
None
History :
1925 - in BPR plan
1926 - commissioned
195x - Traded alignments with MT 49
Description :
Ran from the North Dakota border near Wibaux to the Idaho border at Lookout Pass.
Multiplexes :
US 12 from Miles City to Laurel
US 191 from Bozeman to Big Timber
Junctions with other US and Interstate Routes :
US 12 at Missoula, Drummond, and Fallon
US 93 at Missoula
US 91 near Butte
US 287 near Three Forks
US 191 at Bozeman and Big Timber
US 87 at Billings
US 312 at Miles City
Major Cities :
Glendive, Miles City, Billings, Livingston, Butte, Anaconda, Missoula
Business and Bypass Routes :
Bypass : Billings (1962 - 197x), Butte (1960-1969)
History :
1925 - in BPR plan
1926 - commissioned
1930 - replaced between Three Forks and Garrison by US 10S
1959 - replaced US 10S
1974 - route replaced by I-90 from Idaho border to Missoula
1986 - decommissioned in Montana, replaced by I-90 and I-94
Description :
1) Ran from Three Forks to Garrison for 122 miles
2) Ran from Gregson to Drummond for 62 miles
3) Ran from De Smet to the Idaho Border near Heron for 142 miles
Multiplexes :
1) US 91 at Helena
3) US 93 from Missoula to Ravalli
Junctions with other US and Interstate Routes :
None
Major Cities :
1) Helena
2) Anaconda, Phillipsburg
3) Ravalli, Thompson Falls
Business and Bypass Routes :
None
History :
1) Existed on maps 1935-1936, replacing US 10N, AASHO was trying to eliminate split routes.
2) Existed 1936 - 1986, replaced MT-110, replaced by MT-1
3) Existed 1941 - 1967, replaced MT-3, replaced by MT-200
Description :
Ran from Three Forks to Garrison for 112 miles
Multiplexes :
None
Junctions with other US and Interstate Routes :
US 91 at Helena
Major Cities :
Helena
Business and Bypass Routes :
None
History :
1930 - commissioned
1959 - replaced by MT-287 from Three Forks to Helena and US 12 from Townsend to Garrison
Description :
Ran from Three Forks to Garrison for 115 miles
Multiplexes :
US 91 Butte to Ramsey
Junctions with other US and Interstate Routes :
None
Major Cities :
Butte
Business and Bypass Routes :
Bypass : Butte (Centennial Ave.)
History :
1930 - replaced US 10
1959 - replaced by US 10
Description :
Runs from Idaho Border at Lolo Pass to North Dakota Border near Baker for
597 miles
Multiplexes :
US 93 from Lolo to Missoula
I-90 from Missoula to Garrison
US 287 from Helena to Townsend
US 89 from 9 miles south of White Sulphur Springs to White Sulphur Springs
I-94 from Forsyth to Miles City
Junctions with other US and Interstate Routes :
US 93 near Lolo
I-90 in Missoula
I-15 and US 287 in Helena
US 89 near White Sulphur Springs
US 191 at Harlowton
US 87 at Roundup
I-94 at Forsyth
Major Cities :
Westmore, Miles City, Forsyth, Helena, Missoula
Business and Bypass Routes :
Business : Helena, Missoula
History :
1925 - In BPR plan
1926 - Commissioned, ending at Miles City
1931-33 - Temporary Route from Ismay to Fallon
1939 - Extended west to Yellowstone National Park west of Silver Gate along US 10,
US 310, and replacing MT-32
1959 - replaced from Forsyth to Yellowstone National Park west of Silver Gate by US 312
replaced MT-6 from Forsyth to Townsend, replaced US 10N from Townsend to Garrison
signed along US 10 to Missoula
1962 - extended west to Idaho border at Lolo Pass south along US 93 to Lolo, then west
Description :
Runs from the Idaho Border at Targhee Pass to the West Yellowstone Park
Entrance for 10 miles
Multiplexes :
US 191 / US 287 from Wyoming Border to West Yellowstone
Junctions with other US and Interstate Routes :
US 191 / US 287 at West Yellowstone
Major Cities :
West Yellowstone
Business and Bypass Routes :
None
History :
1940 - Extended west from Yellowstone National Park to Idaho border,
signed with US 191 from West Yellowstone to Idaho border.
Description :
Runs from US 2 near Havre to the Wyoming Border near Aberdeen for 440
miles
Multiplexes :
I-90 from the Wyoming Border to Exit 452
I-90 / US 212 from Exit 510 to Exit 452
US 12 at Roundup
US 191 from Near Lewistown to 17 miles W of Lewistown
US 89 from near Belt to I-15 at Exit 278
I-15 from Exit 278 to Exit 280
Junctions with other US and Interstate Routes :
I-94 at Billings
US 212 near Crow Agency
US 12 at Roundup
US 191 at Lewistown
US 89 near Belt
I-15 at Great Falls
US 2 near Havre
Major Cities :
Hardin, Billings, Lewistown, Great Falls, Havre
Business and Bypass Routes :
Bypass : Great Falls (1940-1966) along 10th Ave, Great Falls (1967-),
History :
1925 - In BPR plan, started in Browning, then went to Great Falls, Armington, Livingston, Gardner,
then to Yellowstone National Park (along modern US 89)
1926 - Commissioned from Alberta border Port of Piegan to Armington
1934 - Replaced from Port of Piegan to Great Falls by US 89
Extended south to Wyoming border, replacing US 87E
194x - Extended to Pacific Jct., replacing MT-29
Description :
Ran from Armington to Wyoming border south of Wyola
Multiplexes :
US 10 at Billings
Junctions with other US and Interstate Routes :
None
Major Cities :
Stanford, Lewistown, Roundup, Billings, Hardin, Crow Agency, Fort Custer
Business and Bypass Routes :
None
History :
1925 - In BPR plan as US 187
1926 - Commissioned
1934 - Replaced by US 87
Description :
Ran from Armington to Yellowstone National Park for 209 miles
Multiplexes :
None
Junctions with other US and Interstate Routes :
US 10 at Livingston
Major Cities :
White Sulpher Springs, Livingston, Emigrant, Gardiner
Business and Bypass Routes :
None
History :
1926 - Commissioned
1934 - Replaced by US 89
Description :
Runs from Alberta Border at Port of Piegan to Wyoming Border near Gardiner
for 404 miles
Multiplexes :
I-90 from Exit 332 to Exit 340
US 12 from 9 miles south of White Sulphur Springs to White Sulphur Springs
MT 200 from 23 miles east of Great Falls to 20 miles west of Great Falls
US 87 from 23 miles east of Great Falls to Great Falls
I-15 from Great Falls (Exit 278) to Exit 290
US 2 from 4 miles east of Browning to Browning
Junctions with other US and Interstate Routes :
I-90 at Livingston
US 12 near White Sulphur Springs
US 87 near Belt
I-15 at Great Falls
US 287 at Choteau
US 2 near Browning
Major Cities :
Livingston, White Sulphur Springs, Great Falls, Choteau, Browning
Business and Bypass Routes :
Bypass : Great Falls (1940-1969) along 10th Ave
History :
1934 - Extended north into Montana along current routing from the north
Yellowstone Nat'l Park entrance, replacing US 87 north of Great Falls and US 87W
Description :
Ran from Alberta border at Sweetgrass to Monida Pass
Multiplexes :
I-15 along entire length
US 87 from Vaughn to Great Falls
US 10N from Helena to East Helena
US 10S (US 10) from Butte to Silver Bow
Junction with other US and Interstate Routes :
US 2 at Shelby
Major Cities :
Wolf Creek, Helens, Boulder, Butte, Silver Bow, Dillon, Lima
Business and Bypass Routes :
Bypass: Butte (195x-195x)
History :
1925 - In BPR plan
1926 - Commissioned from Great Falls south to Monida Pass
193x - Extended north to Saskachewan border at Sweetgrass
1956 - I-15 assigned to US 91 corridor
1980 - Replaced by I-15
Description :
Runs from BC Border at Port of Roosville to Idaho Border at Lost Trail Pass (6,995 ft.) for 286 miles
Multiplexes :
US 12 from Lolo to Missoula
MT 200 from Missoula to Ravalli
Junction with other US and Interstate Routes :
I-90 at Exit 96 near Missoula
US 2 at Kalispell
Major Cities :
Kalispell, Polson, Missoula, Hamilton
Business and Bypass Routes :
Business: Missoula
History :
1926 - commissioned
1991 - US 93 relocated through Missoula
Description :
Runs from Sask. Border at Port of Morgan to West Yellowstone Park Entrance for 440 miles
Multiplexes :
US 287 from the West Yellowstone Park Entrance to 8 miles north of West
Yellowstone
I-90 from Exit 306 to Exit 367
US 12 near Harlowton
MT 200 / US 87 from 17 miles west of Lewistown to Lewistown
Junctions with other US and Interstate Routes :
US 287 at West Yellowstone
US 20 at West Yellowstone
I-90 near Belgrade (Exit 306)
US 89 at Exit 332 (I-90)
US 12 at Harlowton
US 87 near Moore
US 2 at Malta
Major Cities :
Malta, Lewistown, Big Timber, Bozeman, West Yellowstone
Business and Bypass Routes :
Business : Lewistown
History :
1926 - commissioned from West Yellowstone to Idaho border at Targhee Pass
1934 - extended north to US 10 at Bozeman
1963 - extended north to US 2 at Malta
1981 - eliminated from West Yellowstone to Idaho border, extended east to Yellowstone National Park
1997 - extended north over MT-242 to Saskachewan border at Port of Morgan
Description :
Runs from Wyoming Border near Beartooth Pass to Wyoming Border near Alzada
for 314 miles
and Wyoming Border to NE entrance of Yellowstone National Park for 8 miles.
Multiplexes :
US 310 from Rockvale to I-90
I-90 from Exit 434 to I-94
I-94 from I-90 to Exit 510 near Crow Agency
MT 59 at Broadus
Junctions with other US and Interstate Routes :
US 310 at Rockvale
I-90 near Laurel
I-94 at Billings
Major Cities :
Laurel, Billings, Crow Agency, Broadus
Business and Bypass Routes :
Bypass : Billings (1962-197x)
History :
1939 - extended into Montana from Wyoming border at Alzada to Miles City
1962 - replaced by US 312 from Broadus to Miles City
replaced MT-8 from Broadus to Crow Agency, signed along US 87 to Billings,
replaced US 312 from Billings to Yellowstone National Park west of Silver Gate
Description :
Runs from Choteau to the West Yellowstone Park Entrance for 282 miles
Multiplexes :
I-15 from Wolf Creek to Helena
US 12 from Helena to Townsend
MT 2 from 11 miles west of Three Forks to 3 miles west of Three Forks
US 191 from the West Yellowstone Park Entrance to 8 miles north of West Yellowstone
US 20 from West Yellowstone to the West Yellowstone Park Entrance
Junctions with other US and Interstate Routes :
US 20 at the West Yellowstone Park Entrance
I-90 at Exit 274
I-15 at Helena
US 89 at Choteau
Major Cities :
West Yellowstone, Townsend, Helena, Choteau
Business and Bypass Routes :
None
History :
Segments of US 287 were formerly a part of MT-287.
1965 - Extended into Montana from the southern Yellowstone Nat'l Park
entrance, followed US 20 into Idaho, then came back into Montana along current MT-87
1966 - US 287 rerouted to north and east sides of Hebgen Lake, replaced by MT-87
Description :
Runs from Wyoming Border near Warren to I-90 near Laurel for 55 miles
Multiplexes :
US 212 from Rockvale to I-90
Junctions with other US and Interstate Routes :
US 212 at Rockvale
I-90 near Laurel
Major Cities :
Laurel
Business and Bypass Routes :
None
History :
Former spur from US 10. Joined at Laurel before I-90.
1925 - In BPR plan
1926 - commissioned
Description :
Ran from Broadus to Billings
Multiplexes :
US 12 Miles City to Forsyth
I-94 / US 10 Miles City to Billings
US 87 at Billings
Junction with other US and Interstate Routes :
US 212 at Broadus
Major Cities :
Volborg, Miles City, Forsyth
Business and Bypass Routes :
None
History :
1960 - replaced US 12 from Forsyth to Yellowstone National Park at Silver Gate for 234 miles
1961 - extended east
1962 - replaced by US 212 from Billings to Yellowstone National Park at Silver Gate
1980 - replaced by MT-59 from Broadus to Miles City, US 10 from Miles City to Billings