List of U.S. Highways in Montana

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U.S. Highways of the Montana Highway System
System information
Maintained by MDT
Highway names
InterstatesInterstate n (I-n)
US HighwaysU.S. Highway n (US n)
StateMontana Highway n (MT n)
Secondary:Secondary Highway n (S-n)
System links

The U.S. Highways in Montana are the segments of the United States Numbered Highway System owned and maintained by the Montana Department of Transportation (MDT) in the U.S. state of Montana.

Mainline highways

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 01926-01-011926 current
US 10 700 1,100 US 10 near Mullan, ID US 10 near Beach, ND 01926-01-011926 01986-01-011986 Mostly replaced by I-90 and I-94
US 10N 112 180 Three Forks Garrison 01930-01-011930 01959-01-011959 Replaced by MT 287 and US 12
US 10S 115 185 Three Forks Garrison 01930-01-011930 01959-01-011959 Became mainline US 10
US 12 597 961 US 12 near Lolo Hot Springs US 12 near Marmarth, ND 01926-01-011926 current
US 20 10 16 US 20 near West Yellowstone Yellowstone National Park entrance at West Yellowstone 01940-01-011940 current
US 87 440 710 I-90/US 87 near Ranchester, WY US 2 at Havre 01926-01-011926 current
US 87E 311 501 Armington US 87E near Ranchester 01926-01-011926 01934-01-011934 Became mainline US 87
US 87W 209 336 Armington Yellowstone National Park near Gardiner 01926-01-011926 01934-01-011934 Replaced by US 89
US 89 404 650 Yellowstone National Park near Gardiner Hwy 2 near Carway, AB 01934-01-011934 current
US 91 396 637 US 91 near Monida Hwy 4 at Sweetgrass 01926-01-011926 01980-01-011980 Replaced by I-15
US 93 286 460 US 93 at Lost Trail Pass BC 93 at Roosville, BC 01926-01-011926 current
US 191 438 705 Yellowstone National Park at West Yellowstone Hwy 4 north of Loring 01926-01-011926 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
01939-01-011939 current
US 287 282 454 Yellowstone National Park entrance at West Yellowstone US 89 at Choteau 01965-01-011965 current
US 310 55 89 US 310/WYO 789 near Frannie, WY I-90 Bus. at Laurel 01926-01-011926 current
US 312 225 362 US 12 in Billings US 212 at Broadus 01959-01-011959 01981-01-011981 Replaced by MT 59 and US 10
US 789 Wyoming state line near Frannie Canadian Border near Sweetgrass Proposed, but never commissioned; would have followed (south to north) US 310, US 10/US 212, US 87, US 91
  •       Former

Special routes

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 10A 142 229 De Smet US 10A near Heron 01941-01-011941 01967-01-011967 Replaced by MT 200
US 10A 62 100 Opportunity Drummond 01936-01-011936 01986-01-011986 Replaced by MT 1

US 10 Byp.
Served Butte

US 10S Byp.
Served Butte

US 10 Byp.
Served Billings

US 12 Bus.
Serves Missoula

US 10 Bus.
Serves Helena

US 10 Byp.
Served Helena

Temp. US 10
Served Fallon and Ismay

US 87 Bus.
Serves Great Falls

US 89 Byp.
Served Great Falls

US 91 Byp.
Served Butte

US 91 Byp.
Served Helena

US 93 Alt.
4.5 7.2 US 93 south of Kalispell US 93 north of Kalispell 02010-01-012010 current Included all segments open as of November 2013; expected completion in 2016[1][2]

US 191 Bus.
02024-06-062024 Served Lewistown

US 212 Byp.
Served Billings
  •       Former

References

  1. ^ Montana Department of Transportation (2013). "Montana Road Log" (PDF). p. 117. Retrieved 2015-02-08.
  2. ^ "Kalispell Bypass". Montana Department of Transportation. Retrieved 2015-02-08.

External links