Montana Highway 3 (MT 3) is a highway in central

Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...

extending north from

Billings Billings is the largest city in the U.S. state of Montana, with a population of 117,116 as of the 2020 census. Located in the south-central portion of the state, it is the seat of Yellowstone County and the principal city of the Billings Met ...

to Great Falls.

Route description

At its southern end, MT 3 begins at I-90 in

and travels northwest to US 12 near Lavina – this is the only section of MT 3 that is not

concurrent Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

with a US highway. MT 3 joins US 12 and travels west to

Harlowton Harlowton is a city in and the county seat of Wheatland County, Montana, United States. The population was 955 at the 2020 census. Description The city was once the eastern terminus of electric operations (1914–74) for the "Pacific Extension ...

, where it leaves US 12 and joins US 191, and travels north for to Eddie's Corner (near Moore). At Eddie's Corner, MT 3 turns west, leaving US 191 and joining the US 87 / MT 200 concurrency, and travels west to Armington where US 89 joins the highway. The four highways continue to Great Falls, where it follows a concurrency with I-315 and ends at I-15. MT 3 is part of the Camino Real Corridor (Corridor 27), a High Priority Corridor that connects

El Paso, Texas El Paso (; "the pass") is a city in and the county seat, seat of El Paso County, Texas, El Paso County in the western corner of the U.S. state of Texas. The 2020 population of the city from the United States Census Bureau, U.S. Census Bureau w ...

to the Canada–US border at Sweet Grass, Montana. The corridor is anchored by Interstate 25 and is part of the larger Ports-to-Plains Alliance. MT 3 is connected to the Canadian border via I-15, and is connected to I-25 in

Buffalo, Wyoming Buffalo is a city in Johnson County, Wyoming, United States. The city is located almost equidistant between Yellowstone Park and Mount Rushmore. The population was 4,415 at the 2020 census, down from 4,585 at the 2010 census. It is the county ...

via I-90.

Major intersections

References

{{Montana-road-stub

003 003, O03, 0O3, OO3 may refer to: *003, fictional British 00 Agent *003, former emergency telephone number for the Norwegian ambulance service (until 1986) *1990 OO3, the asteroid 6131 Towen * OO3 gauge model railway *''O03 (O2)'' and other related ...

Transportation in Yellowstone County, Montana Transportation in Golden Valley County, Montana Transportation in Wheatland County, Montana Transportation in Fergus County, Montana Transportation in Judith Basin County, Montana Transportation in Cascade County, Montana