List of Montana numbered highways

Montana Highway System
Highway markers for Interstate 90, U.S. Highway 2, MT 200, and S-236
Map of main highways (Interstate and U.S.)
System information
Maintained by MDT
Highway names
Interstates:	Interstate n (I-n)
US Routes:	U.S. Highway n (US n)
State:	Montana Highway n (MT n)
Secondary:	Secondary Highway n (S-n)
System links
Montana Highways Secondary

The following is a list of Montana's numbered highways.

Interstate highways

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed
I0015 !I‑15	396.03	637.35	I-15 near Monida	Hwy 4 at Sweetgrass	—	—
I0090 !I‑90	551.68	887.84	I-90 near Mullan, ID	I-90 / US 87 near Ranchester, WY	—	—
I0094 !I‑94	249.15	400.97	I-90 at Billings	I-94 near Beach, ND	—	—
I0115 !I‑115	1.19	1.92	I-15 / I-90 in Butte	Downtown Butte	—	—
I0315 !I‑315	0.83	1.34	I-15 / US 89 / MT 200 in Great Falls	Downtown Great Falls	—	—

U.S. highways

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
US0002 !US 2	667	1,073	US 2 west of Troy	US 2 east of Bainville	1926	current
US0010 !US 10	700	1,130	US 10 near Mullan, ID	US 10 near Beach, ND	1926	1986	Mostly replaced by I-90 and I-94
x25px US0010A !US 10A	62	100	Gregson	Drummond	1936	1986	Replaced by MT 1
x25px US 19610010A !US 10A	142	229	De Smet	US 10A near Heron	1941	1967	Replaced by MT 200
x25px US 19260010N !US 10N	112	180	Three Forks	Garrison	1930	1959	Replaced by MT 287 and US 12
x25px US 19260010S !US 10S	115	185	Three Forks	Garrison	1930	1959	Became mainline US 10
US0012 !US 12	597	961	US 12 near Lolo Hot Springs	US 12 near Marmarth, ND	1926	current
US0020 !US 20	10	16	US 20 near West Yellowstone	Yellowstone National Park entrance at West Yellowstone	1940	current
US0087 !US 87	440	708	I-90 / US 87 near Ranchester, WY	US 2 at Havre	1926	current
x25px US 19260087E !US 87E	311	501	Armington	US 87E near Ranchester	1926	1934	Became mainline US 87
x25px US 19260087W !US 87W	209	336	Armington	Yellowstone National Park near Gardiner	1926	1934	Replaced by US 89
US0089 !US 89	404	650	Yellowstone National Park near Gardiner	Hwy 2 near Carway, AB	1934	current
US0091 !US 91	396	637	US 91 near Monida	Hwy 4 at Sweetgrass	1926	1980	Replaced by I-15
US0093 !US 93	286	460	US 93 at Lost Trail Pass	BC 93 at Roosville, BC	1926	current
US-Alt0093 !US 93 Alt.	4.5	7.2	US 93 south of Kalispell	US 93 north of Kalispell	2010	current	Included all segments open as of November 2013; expected completion 2016
US0191 !US 191	438	705	Yellowstone National Park at West Yellowstone	Hwy 4 north of Loring	1926	current
US0212 !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	1939	current
US0287 !US 287	282	454	Yellowstone National Park entrance at West Yellowstone	US 89 at Choteau	1965	current
US0310 !US 310	55	89	US 310 / WYO 789 near Frannie, WY	I-90 Bus at Laurel	1926	current
US0312 !US 312	225	362	US 12 in Billings	US 212 at Broadus	1959	1981	Replaced by MT 59 and US 10

Primary state highways

• Montana Highway 1 - Opportunity to Drummond
• Montana Highway 2 - Three Forks to Butte
• Montana Highway 3 - Billings to Great Falls
• Montana Highway 5 - Scobey to North Dakota state line near Westby
• Montana Highway 7 - Ekalaka to Wibaux
• Montana Highway 10 - Billings
• 20px Montana Highway 13 - Circle to Port of Scobey at the Saskatchewan border
• Montana Highway 16 - Glendive to the Saskatchewan border at Regway
• Montana Highway 17 - Jct U.S. Route 89 near Kennedy Creek to Port of Chief Mountain at the Alberta border
• Montana Highway 19 - Roy to Grass Range
• Montana Highway 21 - Augusta to Simms
• Montana Highway 23 - Sidney to North Dakota border
• Montana Highway 24 - Jct of MT 200 to Saskatchewan border at Port of Opheim
• Montana Highway 25 - Wolf Point to Bridge Park
• 20px Montana Highway 28 - Plains to Elmo
• 20px Montana Highway 35 - Polson to Evergreen
• 20px Montana Highway 37 - Libby to Eureka
• Montana Highway 38 - Grantsdale to Porter's Corners
• Montana Highway 39 - Forsyth to Lame Deer
• 20px Montana Highway 40 - Whitefish to Columbia Falls
• Montana Highway 41 - Dillon to Vendome Station
• Montana Highway 42 - Jct of MT 24 to Glasgow
• Montana Highway 43 - Lost Trail Pass to Divide
• Montana Highway 44 - U.S. Route 89 about 10 miles (16 km) north of Dupuyer to Interstate 15 at Exit 348
• Montana Highway 47 - Custer to Hardin
• Montana Highway 48 - Mill Creek to Warm Springs
• 20px Montana Highway 49 - East Glacier Park to Jct U.S. Route 89 north of Kiowa
• Montana Highway 55 - Jct of MT 41 near Parsons Bridge to Whitehall
• 20px Montana Highway 56 - Troy to Jct of MT 200 near Noxon
• 20px Montana Highway 59 - Wyoming border south of Biddle to Jordan
• 20px Montana Highway 64 - Jct U.S. Route 191 to Big Sky
• 20px Montana Highway 66 - Fort Belknap Agency to U.S. Route 191
• Montana Highway 69 - Whitehall to Boulder
• Montana Highway 72 - Wyoming border south of Belfry to Bridger
• Montana Highway 78 - Red Lodge to Columbus
• Montana Highway 80 - Fort Benton to Stanford
• Montana Highway 81 - Coffee Creek to Brooks
• 20px Montana Highway 82 - Bigfork to Somers
• 20px Montana Highway 83 - Clearwater Crossing to Bigfork
• Montana Highway 84 - Bozeman Hot Springs to Norris
• Montana Highway 85 - Bozeman Hot Springs to Belgrade
• Montana Highway 86 - Bozeman to Wilsall
• Montana Highway 87 - Idaho border at Raynolds Pass to Jct U.S. Route 287 near Cliff Lake
• Montana Highway 89 - Dillon along Interstate 15
• Montana Highway 117 - Nashua to Fort Peck
• Montana Highway 135 - St. Regis to Jct of MT 200 near Paradise
• 22px Montana Highway 141 - Avon to Mineral Hill
• Montana Highway 200 - Heron to Fairview
• Montana Highway 200 S - Jct of MT 200 near Circle to Jct of Business Route 94/U.S. Route 10 near Glendive
• Montana Highway 287 - Twin Bridges to Ennis

Secondary state highways

File:Montana Secondary Highway 486 Whitefish MT.jpg

Montana Secondary Highway 486 at Columbia Falls

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed
x25px Sec0201 !S-201	69.511	111.867	MT 13 near Vida	MT 200 in Fairview	1952	current
x25px Sec0202 !S-202	2.662	4.284	MT 23 near Sidney	North Dakota state line	1977	current
x25px Sec0203 !S-203	11.983	19.285	S-269 north of Stevensville	US 93 in Florence	1976	current
x25px Sec0204 !S-204	1.596	2.569	Milk River crossing	US 2 at Dodson	1993	current
Sec0205 !S-205	24.361	39.205	I-90 at Three Forks	S-411 near Bozeman	1993	current
x25px Sec0206 !S-206	9.741	15.677	MT 35 east of Evergreen	US 2 near Columbia Falls	1926	current
x25px Sec0207 !S-207	21.862	35.183	US 87 / MT 3 / MT 200 near Moccasin	MT 81 in Denton	1993	current
x25px Sec0208 !S-208	9.412	15.147	US 191 in Phillips County	Whitewater	1978	current
x25px Sec0209 !S-209	4.861	7.823	MT 35 at Bigfork	MT 83 near Ferndale	1945	current
x25px Sec0210 !S-210	9.855	15.860	MT 200 at Missoula	I-90 / US 12 at Clinton	1976	current
x25px Sec0211 !S-211	9.757	15.702	Lake County	US 93 in Ronan	1945	current
x25px Sec0212 !S-212	17.285	27.818	MT 200 near Dixon	US 93 near Charlo	1945	current
x25px Sec0213 !S-213	39.513	63.590	US 2 in Cut Bank	Hwy 62 at the Port of Del Bonita	1945	current
x25px Sec0214 !S-214	32.828	52.832	S-213 near Cut Bank	I-15 at Sweet Grass	1945	current
Sec0215 !S-215	21.299	34.277	S-213 near Cut Bank	I-15 near Oilmont	1945	current
x25px Sec0217 !S-217	14.087	22.671	S-343 in Toole County	S-409 at Whitlash	1976	current
x25px Sec0218 !S-218	29.253	47.078	I-15 Bus in Conrad	S-225 in Teton County	1945	current
x25px Sec0219 !S-219	19.818	31.894	US 89 near Pendroy	I-15 Bus near Conrad	1945	current
x25px Sec0220 !S-220	17.940	28.872	S-221 near Choteau	S-219 east of Pendroy	1945	current
Sec0221 !S-221	24.444	39.339	US 89 at Choteau	I-15 near Dutton	1945	current
Sec0222 !S-222	3.589	5.776	I-15 / S-278 south of Dillon	I-15 Bus at Dillon	1976	current
x25px Sec0223 !S-223	52.901	85.136	US 87 / MT 80 near Fort Benton	US 2 in Chester	1945	current
x25px Sec0224 !S-224	18.950	30.497	US 2 near Joplin	Local road in Liberty County	1945	current
x25px Sec0225 !S-225	56.220	90.477	Great Falls city limits	S-366 in Toole County	1945	current
x25px Sec0226 !S-226	14.560	23.432	Eden	Great Falls city limits	1945	current
x25px Sec0227 !S-227	16.756	26.966	S-226 near Eden	US 87 / US 89 / MT 3 / MT 200 near Great Falls	1945	current
x25px Sec0228 !S-228	42.633	68.611	US 87 / US 89 / MT 3 / MT 200 near Great Falls	MT 80 near Fort Benton	1945	current
x25px Sec0229 !S-229	2.592	4.171	Helena city limits	S-279 near Helena	1976	current
x25px Sec0231 !S-231	5.674	9.131	Helena city limits	S-279 near Helena	1983	current
x25px Sec0232 !S-232	42.784	68.854	Havre city limits	Hwy 41 at the Port of Wild Horse	1945	current
x25px Sec0233 !S-233	30.482	49.056	S-232 near Havre	Hwy 21 at the Port of Willow Creek	1945	current
x25px Sec0234 !S-234	21.662	34.862	Rocky Boys Indian Reservation	Havre city limits	1945	current
x25px Sec0235 !S-235	5.610	9.028	MT 85 near Bozeman	Bozeman city limits	1983	current
Sec0236 !S-236	88.235	142.000	US 191 at Hilger	US 87 at Big Sandy	1945	current
x25px Sec0238 !S-238	68.888	110.864	US 2 / MT 3 in Ryegate	US 89 / MT 200 in Lewiston	1945	current
x25px Sec0239 !S-239	11.666	18.775	Utica	US 87 / MT 3 / MT 200 in Hobson	1946	current
x25px Sec0240 !S-240	25.333	40.770	Cleveland	US 2 in Chinook	1945	current
x25px Sec0241 !S-241	43.220	69.556	US 2 at Harlem	Hwy 37 at the Port of Turner	1945	current
x25px Sec0243 !S-243	21.185	34.094	US 2 west of Saco	US 2 in Saco	1945	current
x25px Sec0244 !S-244	24.702	39.754	US 87 north of Roundup	MT 200 in Winnett	1945	current
x25px Sec0245 !S-245	37.826	60.875	Local road northwest of Brusett	MT 200 in Jordan	1945	current

• 20px Montana Secondary Highway 246 - Glasgow to Hinsdale
• 20px Montana Secondary Highway 247 - Webster to Mill Iron (Old 247 ran from Port of Opheim to Glasgow
• Montana Secondary Highway 248 - Opheim to Scobey (Old route of Montana Highway 5)
• 20px Montana Secondary Highway 249 - Jct Montana Highway 287 to Jct U.S. Route 287 near Cameron (Old Montana Secondary Highway 249 ran from Nashua to Fort Peck in 1960's, now Montana Highway 117)
• 20px Montana Secondary Highway 250 - Wolf Point to Volt
• Montana Secondary Highway 251 - Flaxville to Jct U.S. Route 2 near Poplar
• 20px Montana Secondary Highway 252 - Circle to Horse Creek
• 20px Montana Secondary Highway 253 - Terry to Brockway
• 20px Montana Secondary Highway 254 - Glendive to Jct Montana Highway 13 near Vida via Richey
• 20px Montana Secondary Highway 255 - Rudyard to xx
• 20px Montana Secondary Highway 256 - Plentywood to Port of Raymond
• Montana Secondary Highway 257 - Trout Creek to Superior
• 20px Montana Secondary Highway 258 - Reserve to North Dakota border
• 20px Montana Secondary Highway 259 - White Sulphur Springs to Jct U.S. Route 89 at Newlan Creek
• Montana Secondary Highway 261 - Sidney to Wibaux (Old Montana Highway 7)
• 20px Montana Secondary Highway 262 - Superior to xx
• 20px Montana Secondary Highway 263 - Missoula to Huson
• 20px Montana Secondary Highway 264 - Missoula to xx
• 20px Montana Secondary Highway 269 - Hamilton to Stevensville
• 20px Montana Secondary Highway 271 - Drummond to Helmville
• 20px Montana Secondary Highway 272 - Deer Lodge to Goldcreek (Old Montana Secondary Highway 272 connected Helmville to Avon, now Montana Highway 141)
• Montana Secondary Highway 273 - Galen to xx
• 20px Montana Secondary Highway 274 - Jct Montana Highway 1 near Mill Creek to Jct Montana Highway 43 near Fishtrap
• 20px Montana Secondary Highway 275 - Through Deer Lodge
• 20px Montana Secondary Highway 276 - Butte to xx
• 20px Montana Secondary Highway 277 - Hammond to Jct Montana Secondary Highway 323 near Ridgeway
• Montana Secondary Highway 278 - Dillon to Wisdom
• Montana Secondary Highway 279 - Helena to Jct Montana Highway 200 near Flecher Pass
• 20px Montana Secondary Highway 280 - Helena to Trout Creek Canyon
• 20px Montana Secondary Highway 282 - Jack Mountain to Montana City
• 20px Montana Secondary Highway 283 - Pony to Harrison
• 20px Montana Secondary Highway 284 - Townsend to Canyon Ferry
• 20px Montana Secondary Highway 285 - Radersburg to Toston
• 20px Montana Secondary Highway 286 - Three Forks to Trident
• Montana Secondary Highway 288 - Anceney to Manhattan
• 20px Montana Secondary Highway 290 - Manhattan to xx
• 20px Montana Secondary Highway 292 - Whitefish Stage Road - MT 40 near Whitefish to S-548 in Evergreen
• 20px Montana Secondary Highway 294 - Horse Butte to Jct U.S. Route 12 north of Martinsdale
• 20px Montana Secondary Highway 295 - Mission to Livingston
• 20px Montana Secondary Highway 296 - Lebo Lake to Two Dot
• 20px Montana Secondary Highway 297 - Careless Creek to Judith Gap
• 20px Montana Secondary Highway 298 - Big Timber to Boulder Ranger Station
• 20px Montana Secondary Highway 300 - Ryegate to Big Coolie Creek
• 20px Montana Secondary Highway 302 - Billings to Molt
• 20px Montana Secondary Highway 304 - Shepherd to Jct U.S. Route 212
• 20px Montana Secondary Highway 305 - Billings to xx
• 20px Montana Secondary Highway 306 - Columbus to Rapelje
• 20px Montana Secondary Highway 308 - Belfry to Red Lodge (Orig route extended east to Bridger, now part of Montana Highway 72)
• 20px Montana Secondary Highway 310 - Custer to Musselshell
• 20px Montana Secondary Highway 311 - Hysham to Myers
• 20px Montana Secondary Highway 313 - Fort Smith to Hardin
• 20px Montana Secondary Highway 314 - Busby to Wyoming border south of Decker (Continues as Wyoming State Highway 338)
• 20px Montana Secondary Highway 315 - Lame Deer to near Forsyth
• 20px Montana Secondary Highway 317 - Kalispell southeast bypass from US 93 to MT 35
• 20px Montana Secondary Highway 318 - Swords Park to Billings Municipal Airport
• 20px Montana Secondary Highway 320 - Ismay to Jct U.S. Route 12
• 20px Montana Secondary Highway 322 - Baker to Medicine Rocks
• 20px Montana Secondary Highway 323 - Ekalaka to Alzada
• Montana Secondary Highway 324 - Clark Canyon Dam to Idaho border at Bannock Pass
• 20px Montana Secondary Highway 325 - Chinook to North Chinook Reservoir
• 20px Montana Secondary Highway 326 - Alzada to Wyoming border south of Alzada (Old Montana Secondary Highway 326 was near Bigfork)
• 20px Montana Secondary Highway 327 - Bainville to North Dakota border at Fort Union
• 20px Montana Secondary Highway 328 - Jct Montana Secondary Highway 323 to South Dakota border near Capitol (Old Montana Secondary Highway 328 ran from Broadview to xx)
• Montana Secondary Highway 330 - Cascade to Ulm
• 20px Montana Secondary Highway 331 - Belt to Jct Montana Secondary Highway 228
• 20px Montana Secondary Highway 332 - Twelve Mile Dam to Jct Montana Secondary Highway 447 South of Brandenburg
• 20px Montana Secondary Highway 334 - Laredo to Beaver Creek Reservoir (Old Montana Secondary Highway 334 ran from Port of Scobey to Scobey (now part of Montana Highway 13)
• 20px Montana Secondary Highway 335 - Glendive to Balier Reservoir
• 20px Montana Secondary Highway 336 - Rush Hall to Carlyle
• 20px Montana Secondary Highway 338 - Hogeland to Jct North of Harlem
• 20px Montana Secondary Highway 339 - Wilsall to xx
• 20px Montana Secondary Highway 340 - Mildred to Fallon
• 20px Montana Secondary Highway 341 - Jordan to Fort Peck Lake
• 20px Montana Secondary Highway 342 - Jct U.S. Route 212 to Little Big Horn Battlefield
• Montana Secondary Highway 343 - Oilmont to Galata
• 20px Montana Secondary Highway 344 - Brockton to Froid
• 20px Montana Secondary Highway 345 - Bozeman to Gallatin Gateway
• Montana Secondary Highway 346 - Manhattan to Four Corners
• 20px Montana Secondary Highway 347 - Belgrade to Amsterdam
• 20px Montana Secondary Highway 348 - Gilles to Philipsburg
• 20px Montana Secondary Highway 350 - Homestead to Jct Montana Secondary Highway 344
• 20px Montana Secondary Highway 352 - Dayton to Lake Mary Ronan
• 20px Montana Secondary Highway 353 - Round Butte to Moiese
• 20px Montana Secondary Highway 354 - Round Butte to Polson
• 20px Montana Secondary Highway 355 - Helena to xx
• 20px Montana Secondary Highway 356 - Helena to xx
• 20px Montana Secondary Highway 357 - Alder to xx
• 20px Montana Secondary Highway 358 - Cut Bank to Valier
• Montana Secondary Highway 359 - Harrison to Cardwell
• 20px Montana Secondary Highway 360 - Fort Logan to White Sulphur Springs
• 20px Montana Secondary Highway 363 - Malta to Dodson
• 20px Montana Secondary Highway 364 - Malta to xx
• Montana Secondary Highway 365 - Brady to Faris School Road
• 20px Montana Secondary Highway 371 - Melville to Twodot
• 20px Montana Secondary Highway 374 - Outlook to Jct Montana Highway 5
• 20px Montana Secondary Highway 377 - Stevensville to xx
• Montana Secondary Highway 379 - Dutton to xx
• 20px Montana Secondary Highway 381 - Colding Creek to Jct U.S. Route 12
• 20px Montana Secondary Highway 382 - Perma to Markle Pass
• 20px Montana Secondary Highway 384 - Hardin to Hysham
• 20px Montana Secondary Highway 386 - Fort Benton to xx
• 20px Montana Secondary Highway 387 - Fort Benton to Jct U.S. Route 87
• 20px Montana Secondary Highway 390 - Missoula to xx
• 20px Montana Secondary Highway 391 - Broadus to Wyoming border south of Moorhead
• 20px Montana Secondary Highway 393 - Butte to Newcomb
• 20px Montana Secondary Highway 396 - Coburg to Harlem (Was U.S. Route 2)
• 20px Montana Secondary Highway 399 - Boulder to Whitetail
• 20px Montana Secondary Highway 400 - Buffalo to Hobson
• 20px Montana Secondary Highway 401 - Molt to Canyon Creek (An old Montana Secondary Highway 401 was replaced by Montana Highway 55)
• 20px Montana Secondary Highway 404 - Brockton to xx
• 20px Montana Secondary Highway 405 - Froid to Bainville
• 20px Montana Secondary Highway 408 - Fairfield to Jct U.S. Route 287
• 20px Montana Secondary Highway 409 - Whitlash to Chester
• 20px Montana Secondary Highway 411 - Bozeman to Springhill Cemetery
• Montana Secondary Highway 412 - Bozeman to xx
• 20px Montana Secondary Highway 413 - Jct Montana Highway 7 to Lamesteer
• 20px Montana Secondary Highway 416 - Billings to xx
• 20px Montana Secondary Highway 417 - Jct U.S. Route 2 to Jct Montana Secondary Highway 366
• 20px Montana Secondary Highway 418 - Pryor to xx
• 20px Montana Secondary Highway 419 - Limestone to Jct Montana Highway 78 south of Absarokee
• 20px Montana Secondary Highway 420 - Absarokee to Nye
• 20px Montana Secondary Highway 421 - Columbus to Joliet
• 20px Montana Secondary Highway 422 - Parsons Bridge to Silver Star
• 20px Montana Secondary Highway 424 - Kalispell to west of Whitefish
• 20px Montana Secondary Highway 425 - Roscoe to Fishtail
• 20px Montana Secondary Highway 426 - Lewistown to Kolin
• 20px Montana Secondary Highway 427 - Raynesford to Jct U.S. Route 89 at Currie Spring
• 20px Montana Secondary Highway 428 - Judith Gap to xx
• 20px Montana Secondary Highway 429 - Billings to xx
• 20px Montana Secondary Highway 430 - Helena to Canyon Creek
• Montana Secondary Highway 431 - Fairfield to Power
• 20px Montana Secondary Highway 432 - Big Sandy to Rudyard
• Montana Secondary Highway 434 - Wolf Creek to Johnson Mountain
• 20px Montana Secondary Highway 435 - Augusta to Johnson Mountain
• 20px Montana Secondary Highway 437 - Radersburg to Jct U.S. Route 287
• 20px Montana Secondary Highway 438 - Glentana to Nashua
• Montana Secondary Highway 441 - East of Opportunity off Montana Highway 1
• 20px Montana Secondary Highway 444 - Jct Montana Secondary Highway 213 to Jct U.S. Route 2 near Blackfoot
• 20px Montana Secondary Highway 446 - Forsyth to Hathaway
• 20px Montana Secondary Highway 447 - Rosebud to Ashland
• 20px Montana Secondary Highway 448 - Gildford to Box Elder
• 20px Montana Secondary Highway 449 - Gildford to Milk River
• 20px Montana Secondary Highway 451 - Garryowen to Wyoming border south of Wyola (Was U.S. Route 87)
• Montana Secondary Highway 453 - Helena to Lake Helena
• 20px Montana Secondary Highway 454 - Helena to Unionville
• 20px Montana Secondary Highway 457 - In Wyola from Jct Montana Secondary Highway 451 to Jct Interstate 90 / U.S. Route 87
• 20px Montana Secondary Highway 459 - Great Falls to Jct Montana Secondary Highway 226
• 20px Montana Secondary Highway 462 - Rock Springs to Jct Montana Highway 200
• Montana Secondary Highway 463 - Lodge Grass to Jct near Willow Creek Dam
• 20px Montana Secondary Highway 464 - Babb to Browning
• 20px Montana Secondary Highway 466 - Trout Hatchery to Jct Montana Secondary Highway 238
• 20px Montana Secondary Highway 467 - Circle to Lindsay
• 20px Montana Secondary Highway 470 - Bloomfield to Lindsay
• 20px Montana Secondary Highway 471 - Thompson Falls to Idaho border
• 20px Montana Secondary Highway 472 - Trout Creek to Thompson Falls (Old Montana Highway 200)
• 20px Montana Secondary Highway 473 - Conner to Painted Rocks
• 20px Montana Secondary Highway 476 - Pray to Montanapolis Springs
• 20px Montana Secondary Highway 478 - Big Timber to northwest of Big Timber
• 20px Montana Secondary Highway 482 - Libby to xx
• 20px Montana Secondary Highway 484 - Fort Howe to Jct U.S. Route 212 near Ashland
• 20px Montana Secondary Highway 485 - Trailcreek to Columbia Falls
• 20px Montana Secondary Highway 486 - Columbia Falls to Camas Creek entrance of Glacier National Park (and unnumbered to British Columbia border as the North Fork Road)
• 20px Montana Secondary Highway 487 - Whitefish to Whitefish Mountain Resort at Big Mountain
• 20px Montana Secondary Highway 489 - Miles City to Kinsey
• 20px Montana Secondary Highway 493 - Plevna to Baker
• 20px Montana Secondary Highway 494 - Plevna to Willard
• 20px Montana Secondary Highway 495 - Great Falls to xx
• 20px Montana Secondary Highway 496 - Bainville to Jct Montana Highway 16
• 20px Montana Secondary Highway 500 - Melstone to Mosby
• 20px Montana Secondary Highway 501 - Grantsdale to Sleeping Child Hot Springs
• 20px Montana Secondary Highway 503 - Kalispell area loop serving Foys Canyon and Lone Pine State Park
• 20px Montana Secondary Highway 504 - Marsh to xx
• 20px Montana Secondary Highway 505 - Lewistown to xx
• Montana Secondary Highway 507 - Alberton to Huson
• 20px Montana Secondary Highway 508 - Yaak to Jct U.S. Route 2
• Montana Secondary Highway 509 - Monida to Red Rock Lakes
• 20px Montana Secondary Highway 510 - Brockway to Dry Ash Creek
• 20px Montana Secondary Highway 511 - Port of Whitetail to Flaxville (Was Montana Highway 13)
• 20px Montana Secondary Highway 512 - Hall to xx
• 20px Montana Secondary Highway 513 - Hall to Hardin
• 20px Montana Secondary Highway 514 - Poplar to xx
• 20px Montana Secondary Highway 514 - Plentywood to xx
• 20px Montana Secondary Highway 516 - Coalridge to Dagmar (Old Montana Secondary Highway 516 ran from Jct U.S. Route 2 to Katy Lake)
• 20px Montana Secondary Highway 517 - Coalridge to Antelope
• Montana Secondary Highway 518 - East Helena to Montana City
• 20px Montana Secondary Highway 522 - Huntley
• 20px Montana Secondary Highway 529 - Chinook to Jct southwest of Chinook
• 20px Montana Secondary Highway 532 - Billings to Laurel
• 20px Montana Secondary Highway 535 - Billings to xx
• 20px Montana Secondary Highway 537 - Hinsdale to xx
• 20px Montana Secondary Highway 540 - Wineglass Mountain to Jct near Point of Rocks
• 20px Montana Secondary Highway 541 - Windham to Utica
• 20px Montana Secondary Highway 543 - Jordan to Hell Creek
• 20px Montana Secondary Highway 544 - Boyes to Biddle
• 20px Montana Secondary Highway 548 - North Kalispell connector from S-424 to US 2.
• 20px Montana Secondary Highway 551 - Geyser to xx
• Montana Secondary Highway 552 - Sunburst to Jct Montana Secondary Highway 343
• Montana Secondary Highway 563 - Ashland to Springdale
• 20px Montana Secondary Highway 564 - Carter to Jct Montana Secondary Highway 223
• 20px Montana Secondary Highway 565 - Greenfield to Simms
• 20px Montana Secondary Highway 566 - Ashland to Jct Montana Secondary Highway 314
• 20px Montana Secondary Highway 567 - Yaak to Libby
• 20px Montana Secondary Highway 568 - Nibbe to Huntley
• 20px Montana Secondary Highway 569 - Opportunity to Jct Montana Highway 43
• 20px Montana Secondary Highway 571 - Emigrant to Jct Montana Secondary Highway 540
• 20px Montana Secondary Highway 572 - Chico Hot Springs to JCT Montana Secondary Highway 540
• 20px Montana Secondary Highway 573 - Katy Lake to Medicine Lake

Former highways

• Montana Highway 4 - Thompson Falls to Idaho state line (Replaced by Forest Service Road NF-7623 and S-471.)
• Montana Highway 6 - Townsend to Forsyth
• Montana Highway 8 - Crow Agency to Olive
• Montana Highway 9 - Lolo to Idaho border at Lolo Pass
• Montana Highway 11 - Alberta border at Sweetgrass to Vaughn, became part of U.S. Route 91 in 1934.
• Montana Highway 14 - Fairview at the North Dakota border to Glendive
• Montana Highway 15 - Chester to Stanford
• Montana Highway 18 - Glendive to Grassrange
• Montana Highway 20 - North Dakota border at Sidney to Idaho border near Heron (Replaced by MT 200.)
• Montana Highway 22 - Saskatchewan border at Port of Ophiem to Wyoming border at Alzada
• Montana Highway 26 - Manicke to Trout Creek
• Montana Highway 27 - Big Sandy to Winifred
• Montana Highway 29 - Great Falls to Port of Wildhorse
• Montana Highway 30 - South Dakota border near Midland to Jct U.S. Route 12 northwest of Mizpah
• Montana Highway 31 - Bigfork to Drummond
• Montana Highway 32 - Rockvale to Yellowstone National Park at Silver Gate
• Montana Highway 33 - Choteau to Wolf Creek
• Montana Highway 34 - Twin Bridges to Ennis
• Montana Highway 36 - Dillon to Gibbons Pass
• Montana Highway 45 - Forsyth to Lame Deer via Lee
• Montana Highway 50 - Jct U.S. Route 287 to Idaho border at Raynolds Pass
• Montana Highway 110 - Opportunity to Drummond
• Montana Highway 187 - Wilsall to West Yellowstone
• Montana Highway 191 - Jct U.S. Route 10S at Sappington to Jct Montana Highway 187 at Grayling
• Montana Highway 789 - Alberta border at Sweetgrass, south along Interstate 15 / U.S. Route 91 to Great Falls, then southeast along U.S. Route 87 to Billings, then southwest along U.S. Route 212 to Laurel, then to Wyoming border south of Warren along U.S. Route 310
• 20px Montana Secondary Highway 216 - Jct Interstate 15 to Jct U.S. Route 89 via Valier (Replaced by Montana Highway 44.)
• 20px Montana Secondary Highway 230 - Windham to Fort Benton (Replaced by Montana Highway 80.)
• 20px Montana Secondary Highway 235 - Brooks to Jct Montana Secondary Highway 230 near Arrow Creek (Replaced by Montana Highway 81.)
• 20px Montana Secondary Highway 242 - Port of Morgan at the Saskatchewan border to Malta (Replaced by U.S. Route 191)
• 20px Montana Secondary Highway 281 - Cardwell to Boulder (Replaced by Montana Highway 69.)
• 20px Montana Secondary Highway 289 - Norris to Bozeman Hot Springs (Replaced by Montana Highway 84.)
• Montana Secondary Highway 291 - Bozeman Hot Springs to Belgrade (Replaced by Montana Highway 85.)
• 20px Montana Secondary Highway 293 - Wilsall to Bozeman (Old Montana Highway 187 ; replaced by Montana Highway 86.)
• 20px Montana Secondary Highway 307 - Columbus to Red Lodge (Now Montana Highway 78.)
• 20px Montana Secondary Highway 319 - Jct U.S. Route 212 South of Broadus to Wyoming border south of Biddle (Replaced by Montana Highway 59 in 196x)
• 20px Montana Secondary Highway 375 - Continental Drive -- downtown Butte to Jct Old US 10 (Montana Highway 2) southeast of Butte
• 20px Montana Secondary Highway 376 - Fort Belknap Agency to Jct U.S. Route 191 near Landusky (Replaced by Montana Highway 66)
• 20px Montana Secondary Highway 397 - Belfry to Wyoming border (Replaced by Montana Highway 72)
• 20px Montana Secondary Highway 461 - Jct Montana Highway 200 near Paradise to St. Regis (Replaced by Montana Highway 135)
• 20px Montana Secondary Highway 483 - Port of Del Bonita to Santa Rita (Replaced by an extension of Montana Secondary Highway 213)
• 20px Montana Secondary Highway 498 - In Great Falls (Replaced by bypass U.S. Route 87)
• 20px Montana Secondary Highway 499 - Follows the north end of Hebgen Lake from Jct Montana Highway 287 to Jct U.S. Route 191 (Replaced by U.S. Route 287 in 1964)
• 20px Montana Secondary Highway 506 - Yaak to Libby (Replaced by Montana Secondary Highway 567)

See also

• Montana portal
• U.S. Roads portal