Montana State Highways 1 - 50

SUV 1942

MT 1

Description :
Runs from Opportunity to Drummond

Junctions with other US, State, and Interstate Routes :
I-90 at Opportunity

Major Cities :
Anaconda, Phillipsburg

History :
Was Alt US 10 (1935-198x) An earlier MT-1 (1936-196x) followed the path of US 287 from Sappington to Grayling


MT 2

Description :
Runs from Three Forks to Butte

Multiplexes :
US 287 from Three Forks to Sappington Bridge
MT-69 from Cardwell to Whitehall

Junctions with other US, State, and Interstate Routes :
I-90 at Three Forks

History :
Old Route for US 10


MT 3

Description :
Runs from Great Falls to Billings

Multiplexes :
MT 200 / US 87 from Great Falls to Moore
US 89 from near Great Falls to Belt
US 191 from Moore to Lavina
US 12 from Harlowton to Lavina

Junctions with other US, State, and Interstate Routes :
I-90 at Billings (Exit 450)
US 12 at Lavina
US 191 at Harlowton

Major Cities :
Billings, Harlowton

History :
An old MT 3 ran west from Ravalli to Idaho along what is now MT-200 in the early 1930's.
Current verison only connected Lavina to Billings.


MT 4

Description :
Ran from Idaho state line to Thompson Falls

Junctions with other US, State, and Interstate Routes :
US 10 at Thompson Falls

History :
Decommissioned 1940


MT 5

Description :
Runs from North Dakota state line near Westby to Scobey

Major Cities :
Plentywood

History :
Orig went from ND border to Ophiem
Truncated at Flaxville 1940
Extended to Scobey 196x


MT 6

Description :
Ran from Forsyth to Townsend

Multiplexes :
US 89 from south of White Sulphur Springs to White Sulphur Springs

Junctions with other US, State, and Interstate Routes :
US 10 at Forsyth
US 10N at Townsend

Major Cities :
Harlowton, White Sulphur Springs

History :
In 1960, MT 6 was replaced by a rerouted US 12


MT 7

Description :
Runs from Wibaux to Ekalaka

Multiplexes :
None

Junctions with other US, State, and Interstate Routes :
I-94 at Wibaux
US 12 at Baker

Major Cities :
Ekalaka, Baker, Wibaux

History :
Extended north to Sidney (1937)
Truncated Baker 1939
back to Wibaux 1946


MT 8

Description :
Ran from Olive to Crow Agency

History :
East end shifted to Broadus 194x
Replaced by rerouted US 212, 196x


MT 9

Description :
Ran from Lolo to Idaho border at Lolo Pass

History :
Decommissioned 1940
Now US 12


MT 10

Description :
Runs from xx to Billings

History :
Future


MT 11

Description :
Ran from Alberta border at Sweetgrass to Vaughn

History :
Replaced by an extension of US 91 (1934)


MT 13

Description :
Runs from Port of Scobey at the Saskatchewan border to Circle

Junctions with other US, State, and Interstate Routes :
MT 5 at Scobey
US 2 near Wolf Point

Major Cities :
Scobey

History :
Original route ran north to Port of Whitetail via Flaxville and south from Circle via Brockway, Hazel, Tery, Hazel, Fallon, Ismay and Mildred to Westmore
Border connection shifted 196x
There was a MT 13W, now MT 25


MT 14

Description :
Ran from Fairview at the North Dakota border to Glendive

History :
Replaced from Fairview to Sidney by MT 200, from Sidney to Glendive by MT 16


MT 15

Description :
Ran from Chester to Stanford

History :
Decommissioned 1940
Chester to Fort Benton now MT 223, from Fort Benton to Stanford now MT 80


MT 16

Description :
Runs from Canadian border at Regway at the to Glendive

History :
Used to end at North Dakota border east of Sidney


MT 17

Description :
Runs from Port of Chief Mountain at the Alberta border to Jct US 89 near Kennedy Creek

Junctions with other US, State, and Interstate Routes :
AB 6 at Candian border
US 89 north of Babb

History :
Since 1941
A.K.A. International Highway


MT 18

Description :
Ran from Glendive to Grassrange

Junctions with other US, State, and Interstate Routes :
US 10 at Glendive
US 87 at Grassrange

Major Cities :
Circle, Jordan, Winnett

History :
Replaced by MT 20 from Grassrange to Circle in 195x

Remainder replaced by MT 20S in 196x


MT 19

Description :
Runs from Grassrange to Roy

Junctions with other US, State, and Interstate Routes :
US 191 at Roy
US 87 at Grassrange
MT 200 at Grassrange

History :
Original MT 19 ran from Port of Morgan to Big Timber
Temporarily split by Fort Peck reservoir
Was replaced by south of Malta by US 191
MT 19E assigned 1961, replaced by MT 19 in 196x


MT 20

Description :
Ran from ND border at Sidney to Idaho border near Heron

Junctions with other US, State, and Interstate Routes :
US 89 at Sun River
MT 21 at Simms
US 10 at Milltown

Major Cities :
Simms, Ovando

Spurs :
MT 20S Glendive to Circle (now MT 200S) (1959-196x)

History :
Original route took MT 21 to August and was co-signed with MT 33 southwards
Extended east from Sun River to Sidney 1959 Extended west to Idaho from Milltown in 196x
Replaced by MT 200 in 196x


MT 21

Description :
Runs from Simms to Augusta

History :
An old MT-21 ran from Ryegate to Columbus (1935-1940)


MT 22

Description :
Ran from Sask. border at Port of Ophiem to Wyoming border at Alzada

History :
Replaced by US 212 from the Wyoming border to Alzada to Miles City in 193x
Temporarily split by Fort Peck reservoir
Replaced north of Jordan by MT 24
Old route north of Glasgow now MT 247
Remainder replaced by MT 59 in 19xx


MT 23

Description :
Runs from North Dakota border to Sidney

Multiplexes :
None

Junctions with other US, State, and Interstate Routes :
MT 200 at Sidney

Major Cities :
Sidney

Spurs :
MT 23N ND border at Fairview to Sidney (now part of MT 200)(194x-1959)
MT 23S ND border to Sidney (now MT 23) (195x-1959)

History / Notes :
Used to extend west to Circle, from Sidney to Circle was replaced by MT 20 in 1959


MT 24

Description :
Runs from Sask. Border at Port of Ophiem to Jct MT 200

Multiplexes :
None

Junctions with other US, State, and Interstate Routes :
MT 200 at 31 miles west of Circle
MT 117 near Fort Peck
MT 42 near Glasgow
US 2 near Glasgow

Major Cities :
Glasgow

History / Notes :
MT 24W connected MT 24 with the city of Glasgow. It was once MT 24. Ran atop the Fort Peck Dam, this is now MT 42.
An old MT 24 ran between Marion and Jennings in the 1930's, this is now Pleasant Valley Rd


MT 25

Description :
Runs from Bridge Park to Wolf Point

Multiplexes :
None

Junctions with other US, State, and Interstate Routes :
MT 13 at Bridge Park
US 2 at Wolf Point

Major Cities :
None

History / Notes :
An old MT-25 used to run from Lewistown to Billings along some of MT 238 and MT 3 in the 1930's


MT 26

Description :
Ran from Manicke to Trout Creek

History :
Decommissioned & "Impassable" 1940


MT 27

Description :
Ran from Big Sandy to Winifred

Major Cities :
Judith

History :
Decommissioned 1940
Now MT 236


MT 28

Description :
Runs from Elmo to Plains

Junctions with other US, State, and Interstate Routes :
US 93 at Elmo
MT 200 at Plains

Major Cities :
Lonepine

History :
Future


MT 29

Description :
Ran from Port of Wildhorse to Great Falls

Junctions with other US, State, and Interstate Routes :
US 2 at Havre
US 87/US 89/US 91 at Great Falls

Major Cities :
Big Sandy, Ft. Benton

Business and Bypass routes:
Bypass: Great Falls (194x-195x)

History :
Truncated to Havre
Replaced by an extension of US 87


MT 30

Description :
Ran from S.D. Border near Midland to Jct US 12 NW of Mizpah

Junctions with other US, State, and Interstate Routes :
MT 7 at Ekalaka

Major Cities :
Mill Iron, Ekalaka, Gilman Ranch

History :
Decommissioned 1940


MT 31

Description :
Ran from Bigfork to Drummond

Junctions with other US, State, and Interstate Routes :
US 10 at Drummond

History :
Decommissioned 1940
Now MT 83, MT 200 and MT 271


MT 32

Description :
Ran from Rockvale to Yellowstone NP at Silver Gate

Junctions with other US, State, and Interstate Routes :
US 310 at Rockvale

Major Cities :
Red Lodge

History :
Replaced by US 12 (1939)


MT 33

Description :
Ran from Chotaeu to Wolf Creek

Junctions with other US, State, and Interstate Routes :
US 89 at Choteau
MT 21 at Augusta
MT 20
US 91 at Wolf Creek

Major Cities :
Augusta

History :
Replaced by US 287 (194x)


MT 34

Description :
Ran from Ennis to Twin Bridges

Junctions with other US, State, and Interstate Routes :
Old MT 1 at Ennis
MT 41 at Twin Bridges

Major Cities :
Virginia City, Sheridan

History :
Replaced by MT 287 in 196x


MT 35

Description :
Runs from Haines Corner to Polson

History :
Future


MT 36

Description :
Ran from Dillon to Gibbons Pass

Major Cities :
Wisdom

History :
Now MT 278 and part of MT 43


MT 37

Description :
Runs from Eureka to Libby

Junctions with other US, State, and Interstate Routes :
US 2 at Libby
US 93 at Eureka

Major Cities :
Rexford

History :
Extended east to Columbia Falls 1941-1949
Replaced by MT 40 (1949)


MT 38

Description :
Runs from Porter's Corners to Grantdale

Junctions with other US, State, and Interstate Routes :
MT 1 at Porter's Corners
US 93 at Grantdale

History :
Crosses Skalkaho Pass, closes in Winter.


MT 39

Description :
Runs from Lame Deer to Forsyth

Multiplexes :
None

Junctions with other US, State, and Interstate Routes :
US 212 at Lame Deer
I-94 at Exit 87

Major Cities :
Colstrip

History/Notes :
The original MT 39 connected Malta and Hysham via Edwards.


MT 40

Description :
Runs from Columbia Falls to Whitefish

Junctions with other US, State, and Interstate Routes :
US 2 at Columbia Falls
US 93 at Whitefish

History :
Since 1949


MT 41

Description :
Runs from Vendome Station to Dillon

Junctions with other US, State, and Interstate Routes :
MT 2 at Vendome Station
I-15 at Dillon

Major Cities :
Twin Bridges

History :
Future


MT 42

Description :
Runs from Glasgow to Jct MT 24

Junctions with other US, State, and Interstate Routes :
US 2 at Glasgow

Major Cities :
Glasgow

History :
Was MT 24W


MT 43

Description :
Runs from Divide to Lost Trail Pass

Junctions with other US, State, and Interstate Routes :
I-15 at Divide
US 93 at Lost Trail Pass

Major Cities :
Fishtrap, Wisdom

History :
Future


MT 44

Description :
Runs from I-15 at Exit 348 to US 89 about 10 miles north of Dupuyer

Junctions with other US, State, and Interstate Routes :
I-15 at Exit 348
US 89 near Dupuyer

Major Cities :
Valier

History/Notes :
Was MT 216


MT 45

Description :
Ran from Forsyth to Lame Deer via Lee

History :
Decommissioned 1940
Now MT 447, Rosebud Creek Rd, and MT 39


MT 47

Description :
Runs from Hardin to Custer

Junctions with other US, State, and Interstate Routes :
I-90 at Exit 497
I-94 at Exit 49

Major Cities :
Hardin

History/Notes :
Future


MT 48

Description :
Runs from Warm Springs to Mill Creek

Junctions with other US, State, and Interstate Routes :
I-90 at Warm Springs MT 1 at Mill Creek

History :
Future


MT 49

Description :
Runs from Jct US 89 north of Kiowa to East Glacier Park

Junctions with other US, State, and Interstate Routes :
US 89 at Kiowa US 2 at East Glacier Park

History :
Used to connect to US 89 at Kiowa
Old MT 49 (195x-19xx) ran from Browning to Glacier Park (now US 2)
Switched alignments with US 2 in 195x


MT 50

Description :
Jct US 287 to Idaho border at Raynolds pass

History :
An older MT 50 existed near Wolf Point (194x)


Go to Routes 51-100 Go to Routes 101-up

Return to Montana Highways Index