List of U.S. Highways in Montana

U.S. Highways of the Montana Highway System

U.S. Route 2 markerU.S. Route 12 markerU.S. Route 191 marker

Highway markers for U.S. Highway 2, 12, and 191

Map of main highways (Interstate and U.S.)
System information
Maintained by MDT
Highway names
Interstates: Interstate n (I-n)
US Highways: U.S. Highway n (US n)
State: Montana 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 6671,073 US 2 west of TroyUS 2 east of Bainville 1926current
US 10 7001,130 US 10 near Mullan, IDUS 10 near Beach, ND 19261986 Mostly replaced by I-90 and I-94
US 10N 112180 Three ForksGarrison 19301959 Replaced by MT 287 and US 12
US 10S 115185 Three ForksGarrison 19301959 Became mainline US 10
US 12 597961 US 12 near Lolo Hot SpringsUS 12 near Marmarth, ND 1926current
US 20 1016 US 20 near West YellowstoneYellowstone National Park entrance at West Yellowstone 1940current
US 87 440708 I-90 / US 87 near Ranchester, WYUS 2 at Havre 1926current
US 87E 311501 ArmingtonUS 87E near Ranchester 19261934 Became mainline US 87
US 87W 209336 ArmingtonYellowstone National Park near Gardiner 19261934 Replaced by US 89
US 89 404650 Yellowstone National Park near GardinerHwy 2 near Carway, AB 1934current
US 91 396637 US 91 near MonidaHwy 4 at Sweetgrass 19261980 Replaced by I-15
US 93 286460 US 93 at Lost Trail PassBC 93 at Roosville, BC 1926current
US 191 438705 Yellowstone National Park at West YellowstoneHwy 4 north of Loring 1926current
US 212 322518 Yellowstone National Park at Northeast entrance
US 212 south of Red Lodge		US 212 near Cooke City
US 212 near Alzada		 1939current
US 287 282454 Yellowstone National Park entrance at West YellowstoneUS 89 at Choteau 1965current
US 310 5589 US 310 / WYO 789 near Frannie, WYI-90 Bus at Laurel 1926current
US 312 225362 US 12 in BillingsUS 212 at Broadus 19591981 Replaced by MT 59 and US 10
  •       Former

Special routes

Number Length (mi) Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes
US 10A 142229 De SmetUS 10A near Heron 19411967 Replaced by MT 200
US 10A 62100 GregsonDrummond 19361986 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

US 10 Temp.		 —— —— —— 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.		 4.57.2 US 93 south of KalispellUS 93 north of Kalispell 2010current Included all segments open as of November 2013; expected completion 2016[1][2]

US 191 Bus.		 —— —— —2017 Served Lewiston

US 212 Byp.		 —— —— —— Served Billings
  •       Former

See also

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.
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