Montana Roads - Montana Highways Map

Find Montana Interstates and Federal Highways


Map of Montana Cities and Montana Road Map

History of Interstates and U.S. Highways in Montana

Montana’s vast landscape and rural nature have made highways a vital part of the state's transportation system. Early U.S. highways, such as U.S. 2 and U.S. 10, were essential in connecting the state's smaller towns and larger cities. With the advent of the Interstate Highway System in the 1950s, highways like I-90 and I-15 became critical links for cross-country travel, especially in a state known for its wide-open spaces.

Montana's highways serve both commercial and recreational purposes, with major routes like I-90 facilitating the movement of goods, while roads such as U.S. 93 offer access to popular destinations like Glacier National Park. These highways are vital for connecting Montana to neighboring states and Canada, supporting both the state’s agricultural sector and its thriving tourism industry.

Montana continues to upgrade its highway infrastructure, focusing on improvements to handle increasing traffic volumes, enhance safety, and improve access to remote regions. Projects aimed at widening key routes, upgrading road surfaces, and modernizing highway facilities are ongoing, ensuring that the state remains well-connected despite its large, sparsely populated areas.

Busiest and Longest Federal Interstates and U.S. Highways in Montana

Interstate or Highway Length (mi) Length (km) Southern or Western Terminus Northern or Eastern Terminus Created
I-90 551 887 Idaho Border Wyoming Border 1956
I-15 396 637 Idaho Border Canada Border 1956
I-94 249 401 Billings, MT North Dakota Border 1956
U.S. 2 667 1,073 Idaho Border North Dakota Border 1926
U.S. 93 287 462 Idaho Border Canadian Border 1926
U.S. 12 380 612 Idaho Border North Dakota Border 1926
U.S. 89 318 512 Wyoming Border Canada Border 1926
U.S. 87 355 571 Billings, MT Great Falls, MT 1926
U.S. 212 170 274 Wyoming Border North Dakota Border 1926
U.S. 191 460 740 Wyoming Border Canada Border 1926

Montana Designated Highways



Montana Interstate Highway 15, I-15 N
Montana Interstate Highway 15, I-15 S
Montana Interstate Highway 15, W Iron St
Montana Interstate Highway 90, 1st Ave N
Montana Interstate Highway 90, 3rd St E
Montana Interstate Highway 90, 14th St E
Montana Interstate Highway 90, 14th St W
Montana Interstate Highway 90, Division St
Montana Interstate Highway 90, E Broadway St
Montana Interstate Highway 90, E Front St
Montana Interstate Highway 90, Exposition Dr
Montana Interstate Highway 90, Harrison Ave
Montana Interstate Highway 90, I-90
Montana Interstate Highway 90, I-90 Bus
Montana Interstate Highway 90, I-90 E
Montana Interstate Highway 90, I-90 W
Montana Interstate Highway 90, Laurel Rd
Montana Interstate Highway 90, Main St
Montana Interstate Highway 90, Montana Ave
Montana Interstate Highway 90, N Center Ave
Montana Interstate Highway 90, N Crawford Ave
Montana Interstate Highway 90, N Main St
Montana Interstate Highway 90, N Reserve St
Montana Interstate Highway 90, S Montana St
Montana Interstate Highway 90, Van Buren St
Montana Interstate Highway 90, W Broadway St
Montana Interstate Highway 90, W Front St
Montana Interstate Highway 90, W Iron St
Montana Interstate Highway 94, I-94 Bus
Montana Interstate Highway 94, I-94 E
Montana Interstate Highway 94, I-94 W
Montana Interstate Highway 94, Main St
Montana Interstate Highway 94, N Merrill Ave
Montana Interstate Highway 94, Valley Dr E
Montana Interstate Highway 94, W Towne St
Montana Interstate Highway 115, I-115 N
Montana Interstate Highway 115, I-115 S
Montana Interstate Highway 315, I-315 N
Montana Interstate Highway 315, I-315 S
Montana US Highway 2, 1st Ave N
Montana US Highway 2, 1st St
Montana US Highway 2, 1st St SW
Montana US Highway 2, 1st St W
Montana US Highway 2, 3rd St S
Montana US Highway 2, 6th St E
Montana US Highway 2, 6th St N
Montana US Highway 2, 6th St W
Montana US Highway 2, 7th St
Montana US Highway 2, 9th St W
Montana US Highway 2, A St
Montana US Highway 2, E 9th St
Montana US Highway 2, E Central Ave
Montana US Highway 2, E Idaho St
Montana US Highway 2, E Main St
Montana US Highway 2, E Missoula Ave
Montana US Highway 2, E Washington Ave
Montana US Highway 2, Idaho St
Montana US Highway 2, Main St
Montana US Highway 2, Minnesota Ave
Montana US Highway 2, MT Highway 35
Montana US Highway 2, N 1st St E
Montana US Highway 2, SE Boundary St
Montana US Highway 2, Taylor St
Montana US Highway 2, US-2
Montana US Highway 2, W 9th St
Montana US Highway 2, W Central Ave
Montana US Highway 2, W Idaho St
Montana US Highway 2, W Main St
Montana US Highway 2, Washington Ave
Montana US Highway 3, US-3
Montana US Highway 10, Casman Ct
Montana US Highway 10, US-10
Montana US Highway 10, US-10 E
Montana US Highway 12, 1st Ave W
Montana US Highway 12, 2nd St NE
Montana US Highway 12, 2nd St NW
Montana US Highway 12, 3rd Ave SW
Montana US Highway 12, 3rd St NE
Montana US Highway 12, 8th Ave E
Montana US Highway 12, Broadway St
Montana US Highway 12, Brooks St
Montana US Highway 12, E Lyndale Ave
Montana US Highway 12, Euclid Ave
Montana US Highway 12, Lolo Creek Rd
Montana US Highway 12, Lyndale Ave
Montana US Highway 12, Madison St
Montana US Highway 12, Main St
Montana US Highway 12, Main St E
Montana US Highway 12, Maurice Ave
Montana US Highway 12, Montana Ave
Montana US Highway 12, MT Highway 360
Montana US Highway 12, N Front St
Montana US Highway 12, N Higgins Ave
Montana US Highway 12, N Montana Ave
Montana US Highway 12, Prospect Ave
Montana US Highway 12, Railway Ave
Montana US Highway 12, S 5th St E
Montana US Highway 12, S 6th St E
Montana US Highway 12, S Higgins Ave
Montana US Highway 12, S Madison St
Montana US Highway 12, US-12
Montana US Highway 12, US-12 E
Montana US Highway 12, W Lyndale Ave
Montana US Highway 12, W Montana Ave
Montana US Highway 15, 5th Ave N
Montana US Highway 15, 11th Ave
Montana US Highway 15, Cedar St
Montana US Highway 15, E Helena St
Montana US Highway 15, I-15 Bus
Montana US Highway 15, Main St
Montana US Highway 15, MT Highway 41
Montana US Highway 15, N Atlantic St
Montana US Highway 15, N Last Chance Gulch
Montana US Highway 15, N Last Chance Gulch St
Montana US Highway 15, N Montana Ave
Montana US Highway 15, N Montana St
Montana US Highway 15, Oilfield Ave
Montana US Highway 15, Prospect Ave
Montana US Highway 15, S Atlantic St
Montana US Highway 20, Firehole Ave
Montana US Highway 20, Targhee Pass Hwy
Montana US Highway 20, US-20
Montana US Highway 87, 10th Ave S
Montana US Highway 87, 14th St N
Montana US Highway 87, 14th St S
Montana US Highway 87, 15th St N
Montana US Highway 87, 15th St NE
Montana US Highway 87, 15th St S
Montana US Highway 87, 57th St
Montana US Highway 87, 57th St N
Montana US Highway 87, 57th St S
Montana US Highway 87, E Main St
Montana US Highway 87, Exposition Dr
Montana US Highway 87, Main St
Montana US Highway 87, NE Main St
Montana US Highway 87, River Dr N
Montana US Highway 87, Roundup Rd
Montana US Highway 87, Truck Byp
Montana US Highway 87, US-87
Montana US Highway 87, US-87 Byp
Montana US Highway 89, 2nd St
Montana US Highway 89, 10th Ave S
Montana US Highway 89, Country Club Blvd
Montana US Highway 89, E Park St
Montana US Highway 89, Elliot St N
Montana US Highway 89, Elliot St S
Montana US Highway 89, First Ave
Montana US Highway 89, First Ave S
Montana US Highway 89, Front St
Montana US Highway 89, Main Ave N
Montana US Highway 89, N Main St
Montana US Highway 89, North Entrance Rd
Montana US Highway 89, S Main Ave
Montana US Highway 89, S Main St
Montana US Highway 89, Scott St W
Montana US Highway 89, US-89
Montana US Highway 89, US-89 N
Montana US Highway 89, US-89 S
Montana US Highway 89, W Park St
Montana US Highway 93, 2nd Ave E
Montana US Highway 93, 2nd Ave W
Montana US Highway 93, 2nd St E
Montana US Highway 93, 2nd St W
Montana US Highway 93, Culloyah St
Montana US Highway 93, Dewey Ave
Montana US Highway 93, Lewis and Clark Trail
Montana US Highway 93, Main St
Montana US Highway 93, N 1st St
Montana US Highway 93, N Main St
Montana US Highway 93, N Orange St
Montana US Highway 93, N Reserve St
Montana US Highway 93, Riverside Dr
Montana US Highway 93, S 1st St
Montana US Highway 93, S Main St
Montana US Highway 93, S Orange St
Montana US Highway 93, S Reserve St
Montana US Highway 93, Spokane Ave
Montana US Highway 93, Stephens Ave
Montana US Highway 93, Sunset Blvd
Montana US Highway 93, US-93
Montana US Highway 93, US-93 N
Montana US Highway 191, 1st Ave
Montana US Highway 191, 1st Ave N
Montana US Highway 191, Canyon St
Montana US Highway 191, Central Ave
Montana US Highway 191, D St
Montana US Highway 191, E Main St
Montana US Highway 191, Gallatin Dr
Montana US Highway 191, Gallatin Rd
Montana US Highway 191, H Ave NW
Montana US Highway 191, High St
Montana US Highway 191, Huffine Ln
Montana US Highway 191, N 1st Ave
Montana US Highway 191, N 1st St E
Montana US Highway 191, N 1st St W
Montana US Highway 191, US-191
Montana US Highway 191, W Main St
Montana US Highway 191, Yellowstone Ave
Montana US Highway 212, N Broadway
Montana US Highway 212, N Broadway Ave
Montana US Highway 212, Northeast Entrance Rd
Montana US Highway 212, Park Ave
Montana US Highway 212, S Broadway Ave
Montana US Highway 212, US-212
Montana US Highway 212, W Holt St
Montana US Highway 287, 7th Ave SW
Montana US Highway 287, Hebgen Lake Rd
Montana US Highway 287, Main St
Montana US Highway 287, S Front St
Montana US Highway 287, US-287
Montana US Highway 287, W Division St
Montana US Highway 310, Billings Ave
Montana US Highway 310, N Main St
Montana US Highway 310, S Main St
Montana US Highway 310, US-310
Montana US Highway 408, 1st Rd SW
Montana US Highway 408, 2nd Rd SW
Montana US Highway 408, 3rd Ln SW
Montana US Highway 408, 3rd Rd SW
Montana US Highway 408, 8th Ln SW
Montana US Highway 408, US-408
Montana US Highway 408, W Division