List of state highways in Montana

The state highways in Montana are the state highways owned and maintained by the Montana Department of Transportation (MDT) in the US state of Montana.

Montana Highway System
Highway markers for MT 200 and S-236
Map of main highways within Montana
System information
Maintained by MDT
Formed	1942[1]
Highway names
Interstates	Interstate nn (I-nn)
US Highways	U.S. Highway n (US n)
State	Montana Highway n (MT n)
Secondary	Secondary Highway nnn (S-nnnn)
System links
Montana Highway System Interstate U.S. State Secondary

Montana's state highways are classified as either primary or secondary.[1] Several of Montana's state highways (both primary and secondary), or sections thereof, have also been designated as part of the National Highway System.[1]

Primary state highways

The square markers used today to identify primary Montana highways are only slightly different from their 1940s and earlier predecessors. The old markers used the word "ROUTE" above the number in big size, the route number in the middle, and the word "MONTANA" from edge-to-edge at the sign bottom.[1] The font used was similar to that used for US routes.

Number	Length (mi)[2][3]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
MT 1	—	—	US 191 near Grayling	US 10 near Sappington	—	—	Replaced by MT 287 (now US 287)
MT 1	63.652	102.438	I-90 in Opportunity	I-90 in Drummond	01922-01-011922	current
MT 2	63.241	101.777	I-90 in Butte	I-90 in Three Forks	—	—
MT 3	—	—	Idaho border near Heron	US 93 in Ravalli	—	—	Replaced by US 10 Alt
MT 3	221.770	356.904	I-90 in Billings	I-15 and US 89 in Great Falls	—	—
MT 4	24	39	Idaho state line	MT 3 in Thompson Falls	—	—	decommissioned when Idaho truncated SH 4 at Burke; Replaced by Forest Service Road NF-7623 (connects to Burke) and S-471
MT 5	65.573	105.530	MT 13 in Scobey	ND 5 in Westby	—	—
MT 6	—	—	US 10 Alternate in Townsend	US 10 in Forsyth	—	—	Replaced by US 12
MT 7	80.585	129.689	S-323 in Ekalaka	I-94 in Wibaux	01930-01-011930	current
MT 8	—	—	US 87 in Crow Agency	MT 22 near Olive	—	—	Replaced by US 212
MT 9	—	—	Lolo Pass	US 93 at Lolo	—	—	Replaced by S-412 (now US 12)
MT 11	—	—	US 89 in Vaughn	Alberta border at Sweetgrass	—	01932-01-011932	Replaced by US 91
MT 11	—	—	—	—	—	—
MT 13	112.507	181.062	MT 200 in Circle	Hwy 36 at the Saskatchewan border	—	—
MT 13W	5.797	9.329	US 2 in Wolf Point	MT 13 in Bridge Park	—	01994-01-011994	Replaced by MT 25
MT 14	—	—	US 10 at Glendive	North Dakota border at Fairview	—	—	Replaced by MT 16 and MT 23N (later MT 20; now MT 200)
MT 15	—	—	US 87 in Stanford	US 2 in Chester	—	—	Replaced by S-230 (now MT 80) and S-223
MT 16	152.371	245.217	I-94 Bus. in Glendive	Hwy 6 at the Saskatchewan border	—	—
MT 17	—	—	—	—	—	—	location unknown
MT 17	14.082	22.663	US 89 near Kennedy Creek	Hwy 6 at the Alberta border	—	—
MT 18	—	—	US 87 in Grass Range	US 10/MT 14 in Glendive	—	—	Replaced by MT 20 (now MT 200) and MT 20S (now MT 200S)
MT 19	—	—	US 10 in Big Timber	US 2/MT 39 in Malta	—	—	Replaced by US 191
MT 19	21.482	34.572	US 87 and MT 200 near Grass Range	US 191 near Roy	—	—
MT 20	—	—	US 10 in Bonner	US 89 near Great Falls	—	—	Replaced by MT 200
MT 20S	—	—	MT 20 east of Circle	US 10/I-94 Bus. in Glendive	—	—	Replaced by MT 200S
MT 21	—	—	US 10 in Columbus	MT 6 at Ryegate	—	—	Replaced by S-300 and S-306
MT 21	20.776	33.436	US 287 near Augusta	MT 200 in Simms	—	—
MT 22	—	—	Wyoming border at Alzada	Saskatchewan border at Port of Ophiem	—	—	Replaced by US 212, MT 59, S-341, and MT 24
MT 23	7.527	12.114	MT 16 and MT 200 near Sidney	ND 68 at the North Dakota border	—	—	From 1951 to 1958, continued west to Circle
MT 23N	—	—	—	North Dakota border at Fairview	—	—	Replaced by MT 20 (now MT 200)
MT 23S	—	—	—	ND 68 at the North Dakota border	—	—	Replaced by MT 23
MT 24	58	93	MT 37 at Jennings	US 2 in Marion	—	—
MT 24	134.098	215.810	MT 200 near Brockway	Hwy 2 at the Saskatchewan border	—	—
MT 24W	2.892	4.654	MT 24 south of Glasgow	US 2 in Glasgow	—	01994-01-011994	Replaced by MT 42
MT 25	—	—	US 87 in Billings	US 87 in Lewistown	—	—
MT 25	5.797	9.329	US 2 in Wolf Point	MT 13 in Bridge Park	01994-01-011994	current
MT 26	—	—	MT 3 in Trout Creek	US 2 in Kootenai National Forest	—	—
MT 27	—	—	MT 19 in Winifred	MT 29 in Big Sandy	—	—	Replaced by S-226
MT 28	46.734	75.211	MT 200 near Plains	US 93 in Elmo	01924-01-011924	current
MT 29	—	—	US 87/US 89 in Great Falls	Port of Wildhorse	—	—	Replaced by US 87
MT 30	—	—	US 12 near Miles City	South Dakota border near Mill Iron	—	—
MT 31	—	—	US 10 in Drummond	MT 35 near Bigfork	—	—	Replaced by S-271 and MT 83
MT 32	—	—	Yellowstone National Park at Silver Gate	US 310 at Rockvale	—	—	Replaced by US 212
MT 33	—	—	US 91/MT 20 in Wolf Creek	US 89 in Choteau	—	—	Replaced by US 287
MT 34	—	—	MT 41 in Twin Bridges	MT 287 in Ennis	—	—	Replaced by rerouted MT 287
MT 35	50.669	81.544	US 93 in Polson	US 2 in Evergreen	—	—
MT 36	—	—	US 93 near Gibbons Pass	US 91 in Dillon	—	—	Replaced by MT 43 and S-278
MT 37	67.048	107.903	US 2 in Libby	US 93 in Eureka	—	—
MT 38	53.835	86.639	US 93 in Grantsdale	MT 1 in Porters Corner	01924-01-011924	current	Skalkaho Highway
MT 39	—	—	Port of Morgan at the Saskatchewan border	Hysham	—	—	Replaced by MT 19 (later S-242) and S-245
MT 39	51.163	82.339	US 212 in Lame Deer	North of I-94 near Forsyth	01977-01-011977	current
MT 40	4.505	7.250	US 93 south of Whitefish	US 2 west of Columbia Falls	—	—
MT 41	54.512	87.729	I-15 Bus. in Dillon	MT 2 in Vendome Station	—	—
MT 42	—	—	—	—	—	—	location unknown
MT 42	2.892	4.654	MT 24 south of Glasgow	US 2 in Glasgow	01994-01-011994	current
MT 43	77.462	124.663	US 93 at Lost Trail Pass	I-15 near Divide	—	—	Last mile near western terminus with US 93 is in Idaho.
MT 44	—	—	—	—	—	—	location unknown
MT 44	28.390	45.689	US 93 north of Dupuyer	I-15 east of Valier	—	—
MT 45	—	—	MT 8 in Lame Deer	US 10 in Forsyth	—	—	Replaced by S-315 (now MT 39)
MT 46	—	—	—	—	—	—	location unknown
MT 47	31.437	50.593	I-90 in Hardin	I-94 east of Custer	—	—
MT 48	6.839	11.006	MT 1 near Anaconda	I-90 near Warm Springs	—	—
MT 49	—	—	—	—	—	—	location unknown
MT 49	11.734	18.884	US 2 in East Glacier Park	US 89 north of Kiowa	—	—
MT 50	—	—	MT 13 southeast of Wolf Point	US 2 east of Wolf Point	—	—	Replaced by MT 13
MT 50	—	—	Idaho border at Raynolds Pass	US 287 west of Lake Hebgen	—	—	Replaced by MT 87
MT 55	12.996	20.915	MT 41 north of Silver Star	I-90 at Whitehall	—	—
MT 56	34.646	55.757	MT 200 west of Noxon	US 2 east of Troy	01977-01-011977	current
MT 59	195.389	314.448	WYO 59 at the Wyoming border	MT 200 at Jordan	—	—
MT 64	9.039	14.547	Big Sky Resort	US 191 near Big Sky Resort	—	—
MT 66	50.022	80.503	US 191 south of Landusky	US 2 at Fort Belknap	—	—
MT 68	—	—	I-15 south of Cascade	I-15 north of Cascade	—	—
MT 69	38.395	61.791	MT 55 at Whitehall	I-15 at Boulder	—	—
MT 72	21.408	34.453	WYO 120 at the Wyoming border	US 310 south of Bridger	01977-01-011977	current
MT 77	1.991	3.204	Hot Springs	MT 28 east of Hot Springs	01977-01-011977	current
MT 78	47.714	76.788	US 212 at Red Lodge	I-90 at Columbus	01977-01-011977	current
MT 80	67.172	108.103	US 87 at Stanford	US 87 at Fort Benton	—	—
MT 81	42.446	68.310	MT 80 near Coffee Creek	US 191 at Brooks	—	—
MT 82	6.862	11.043	US 93 north of Somers	MT 35 north of Bigfork	01977-01-011977	current
MT 83	91.118	146.640	MT 200 at Clearwater Junction	MT 35 north of Bigfork	01977-01-011977	current
MT 84	28.904	46.516	US 287 in Norris	US 191/MT 85 near Four Corners	—	—
MT 85	6.704	10.789	US 191/MT 84 near Four Corners	I-90 at Belgrade	—	—
MT 86	37.498	60.347	US 191/I-90 Bus. in Bozeman	US 89 near Wilsall	—	—
MT 87	8.571	13.794	SH 87 at the Idaho border	US 287 west of Quake Lake	01987-01-011987	current
MT 110	—	—	US 10 near Opportunity	US 10 in Drummond	—	—	Replaced by US 10 Alternate
MT 117	13.138	21.144	MT 24 at Fort Peck	US 2 at Nashua	—	—
MT 135	21.549	34.680	I-90 at St. Regis	MT 200 near Paradise	01977-01-011977	current
MT 141	32.468	52.252	US 12 at Avon	MT 200 north of Helmville	01977-01-011977	current
MT 187	—	—	US 10 in Bozeman	US 89 in Wilsall	—	—	Replaced by S-293 (now MT 86)
MT 191	—	—	US 191 near Grayling	US 10 near Sappington	—	—	Replaced by MT 1 (later MT 287, now US 287)
MT 200	706.624	1,137.201	SH 200 at the Idaho border east of Cabinet, Idaho	ND 200 at Fairview	01967-01-011967	current
MT 200S	48.674	78.333	MT 200 east of Circle	I-94 Bus. in Glendive	01967-01-011967	current
MT 287	48.822	78.571	MT 41 at Twin Bridges	US 287 at Ennis	—	—
MT 287A	—	—	MT 287 at Ennis	I-90/US 10 near Three Forks	—	—	Former section of MT 287; replaced by US 287
MT 789	—	—	Wyoming border south of Warren	Alberta border at Sweetgrass	—	—	Part of US 789 corridor

Secondary state highways

Main article: List of secondary highways in Montana

S-486 at Columbia Falls, August 2013

Montana's secondary system was established in 1942,[4] but secondary highways (S routes) were not signed until the 1960s.[1] S route designations first appeared on the state highway map in 1960[5] and are abbreviated as "S-nnn". Route numbers 201 and higher are, with very few exceptions, exclusively reserved for S routes. Notable exceptions include, MT 287, and the former MT 789).

The highway markers for Montana's Secondary Highways are distinctive in that the route number appears in black on a white down-pointing arrowhead.[1] (Early markers were white numbers on black arrowheads with the word Montana in the flat top of the inverted arrowhead and Secondary appearing below the route number on the shields.)

Number	Length (mi)	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
S-201	69.511	111.867	MT 13 near Vida	MT 200 in Fairview	01952-07-301952	current
S-202	34.646	55.757	MT 200 west of Noxon	US 2 east of Troy	01945-11-071945	01977-03-211977	Replaced by MT 56
S-202	2.662	4.284	MT 23 near Sidney	McKenzie County Route 38 near Sidney	01977-03-211977	current
S-203	11.983	19.285	S-269 north of Stevensville	US 93 in Florence	01952-07-301952	current
S-204	1.596	2.569	Milk River near Dodson	US 2 in Dodson	01952-07-301952	current
S-205	—	—	—	—	01943-01-011943	01945-01-011945
S-205	24.361	39.205	I-90 at Three Forks	S-411 near Bozeman	01976-07-011976	current
S-206	9.741	15.677	MT 35 east of Evergreen	US 2 near Columbia Falls	01943-01-011943	current
S-207	—	—	S-208	US 93 in Kalispell	01943-01-011943	01977-01-011977	Now Lower Valley Road
S-207	21.862	35.183	US 87/MT 3/MT 200 near Moccasin	MT 81 in Denton	01978-03-021978	current
S-208	—	—	US 93 north of Somers	MT 35 north of Bigfork	01943-01-011943	01977-01-011977	Replaced by MT 82
S-208	9.412	15.147	US 191 in Phillips County	Whitewater	01978-03-021978	current
S-209	4.861	7.823	MT 35 at Bigfork	MT 83 near Ferndale	01945-11-071945	current	Until 1977, continued south to MT 200 via current MT 83
S-210	9.855	15.860	MT 200 at Missoula	I-90/US 12 at Clinton	01976-07-011976	current
S-211	9.757	15.702	Flathead River near Ronan	US 93 in Ronan	01943-01-011943	current	Round Butte Road
S-212	17.285	27.818	MT 200 near Dixon	US 93 near Charlo	01943-01-011943	current
S-213	39.513	63.590	US 2 in Cut Bank	Hwy 62 at the Port of Del Bonita	01943-01-011943	current
S-214	32.828	52.832	S-213 near Cut Bank	I-15 at Sweet Grass	01943-01-011943	current
S-215	21.299	34.277	S-213 near Cut Bank	I- near Oilmont	01943-01-011943	current
S-216	—	—	I-15 near Valier	US 89	01943-01-011943	01977-01-011977	Replaced by MT 44
S-216	—	—	Marysville	S-279 in Silver City	01981-08-121981	01993-01-011993	Now Marysville Road
S-217	—	—	—	—	01943-01-011943	01945-01-011945
S-217	14.087	22.671	S-343 near Whitlash	S-409 at Whitlash	01976-07-011976	current
S-218	29.253	47.078	I-15 Bus in Conrad	S-225 near Tiber Dam	01945-11-071945	current
S-219	19.818	31.894	US 89 near Pendroy	I-15 Bus near Conrad	01943-01-011943	current
S-220	17.940	28.872	S-221 near Choteau	S-219 east of Pendroy	01943-01-011943	current
S-221	24.444	39.339	US 89 at Choteau	I-15/S-379 near Dutton	01943-01-011943	current
S-222	—	—	—	—	01943-01-011943	01945-01-011945
S-222	3.589	5.776	I-15/S-278 south of Dillon	I-15 Bus. at Dillon	01976-07-011976	current
S-223	52.901	85.136	US 87/MT 80 near Fort Benton	US 2 in Chester	01943-01-011943	current
S-224	18.950	30.497	US 2 near Joplin	1200 Road S near Whitlash	01943-01-011943	current
S-225	56.220	90.477	US 87 in Great Falls	S-366 near Tiber Dam	01943-01-011943	current
S-226	14.560	23.432	Eden	US 87/US 89/MT 3 in Great Falls	01943-01-011943	current
S-227	16.756	26.966	S-226 near Eden	US 87/US 89/MT 3/MT 200 near Great Falls	01943-01-011943	current
S-228	42.633	68.611	US 87/US 89/MT 3/MT 200 near Great Falls	MT 80 near Fort Benton	01945-11-071945	current
S-229	—	—	—	—	01943-01-011943	01954-01-011954
S-229	2.592	4.171	Helena city limits	S-279 near Helena	01976-07-011976	current
S-230	—	—	US 87 at Stanford	US 87 at Fort Benton	01943-01-011943	01977-01-011977	Not built until 1945; replaced by MT 80
S-230	—	—	East of Laurel	S-429 (Now Shiloh Road) in Billings	01982-05-211982	01993-01-011993	I-90 south frontage road
S-231	—	—	US 2 in Rudyard	Goldstone	01943-01-011943	01977-01-011977	Restored as S-255 in 1984
S-231	5.674	9.131	US 12 in Helena	S-279 near Helena	01983-02-241983	current
S-232	42.784	68.854	US 2 in Havre	Hwy 41 at the Port of Wild Horse, Alberta	01943-01-011943	current
S-233	30.482	49.056	S-232 near Havre	Hwy 21 at the Port of Willow Creek	01943-01-011943	current
S-234	21.662	34.862	Rocky Boys Indian Reservation	US 2 in Havre	01943-01-011943	current
S-235	—	—	S-230 near Coffee Creek	US 191 at Brooks	01943-01-011943	01977-01-011977	Replaced by MT 81
S-235	5.610	9.028	MT 85 near Bozeman	S-412 in Bozeman	01983-09-191983	current
S-236	88.235	142.000	US 191 at Hilger	US 87 at Big Sandy	01943-01-011943	current
S-237	—	—	S-426 near Hanover	US 87 Business/US 191 Business at Lewistown	01943-01-011943	current
S-238	68.888	110.864	US 2 in Ryegate	US 89/MT 200 in Lewistown	01943-01-011943	current
S-239	11.666	18.775	Utica	US 87/MT 3/MT 200 in Hobson	01943-01-011943	current
S-240	25.333	40.770	Cleveland	US 2 in Chinook	01943-01-011943	current
S-241	43.220	69.556	US 2 at Harlem	Hwy 37 at the Port of Turner	01943-01-011943	current
S-242	—	—	Port of Morgan at the Saskatchewan border	Malta	01943-01-011943	01993-01-011993	Replaced by US 191
S-243	21.185	34.094	US 2 near Bowdoin National Wildlife Refuge	US 2 in Saco	01943-01-011943	current
S-244	24.702	39.754	US-87 north of Roundup	MT 200 in Winnett	01943-01-011943	current
S-245	37.826	60.875	Brusett	MT 200 in Jordan	01943-01-011943	current
S-246	11.548	18.585	Tampico	MT 42 in Glasgow	01943-01-011943	current
S-247	—	—	Port of Opheim	US-2 in Glasgow	01943-01-011943	01977-01-011977	Replaced by MT 24
S-247	6.260	10.074	S-322 near Mill Iron	Webster	01983-11-091983	current
S-248	46.134	74.245	MT 24 in Opheim	MT 13 in Scobey	01943-01-011943	current	Old route of MT 5
S-249	—	—	MT 24 at Fort Peck	US 2 at Nashua	01943-01-011943	01977-01-011977	Replaced by MT 117
S-249	11.775	18.950	MT 287 near Ennis	US 287 near Cameron	01984-08-291984	current
S-250	49.416	79.527	US 2 near Wolf Point	MT 13 near Volt	01943-01-011943	current
S-251	52.109	83.861	US 2 near Poplar	MT 5/S-511 near Flaxville	01943-01-011943	current
S-252	23.438	37.720	MT 200 near Circle	Horse Creek	01943-01-011943	current
S-253	46.913	75.499	I-94 in Terry	MT 200 in Brockway	01943-01-011943	current
S-254	67.705	108.961	MT 16 in Glendive	MT 13 near Vida	01943-01-011943	current
S-255	—	—	—	—	01943-01-011943	01945-01-011945
S-255	24.936	40.131	US 2 in Rudyard	Goldstone	01984-08-291984	current
S-256	—	—	MT 15 in Plentywood	Hwy 6 near Port of Raymond	01943-01-011943	01977-01-011977	Replaced by MT 16
S-257	5.772	9.289	I-90 in Superior	Trout Creek	01952-11-211952	current
S-258	19.800	31.865	MT 16 in Reserve	ND 50 at North Dakota border	01943-01-011943	current
S-259	—	—	—	—	01943-01-011943	01954-01-011954
S-259	10.073	16.211	S-360 near White Sulphur Springs	US 89 at Newlan Creek	01984-08-291984	current
S-260	—	—	Lambert	MT 14/MT 16 in Sidney	01943-01-011943	01950-01-011950	Replaced by MT 23 (later MT 20; now MT 200)
S-260	3.577	5.757	Bobtail Road near Libby	S-567 near Libby	01986-03-281986	current
S-261	51.446	82.794	I-90 in Wibaux	MT 23 in Sidney	01945-11-071945	current	Former MT 7
S-262	—	—	County Road southeast of St. Regis	S-257 in Superior	01943-01-011943	01977-01-011977	Now Diamond Road and Southside Road
S-263	14.786	23.796	I-90 in Frenchtown	US 93 in Missoula	01943-01-011943	current
S-264	—	—	S-266 in Missoula	S-265 in Missoula	01943-01-011943	01974-01-011974	Now 3rd Street and Clements Road
S-265	—	—	S-266 in Missoula	S-264 in Missoula	01943-01-011943	01974-01-011974	Now South Avenue
S-266	—	—	US 12 in Missoula	S-390 in Missoula	01943-01-011943	01974-01-011974	Now Higgins Avenue
S-267	—	—	Sawmill Gulch Road	MT 200 in Missoula	01943-01-011943	01993-01-011993	Now Van Buren Street and Rattlesnake Drive
S-268	—	—	—	—	01943-01-011943	01977-01-011977
S-269	21.284	34.253	US 93/S-531 in Hamilton	US 93 in Stevensville	01945-11-071945	current
S-270	—	—	Capitol	S-323 in Albion	01953-01-011953	01993-01-011993
S-271	22.319	35.919	I-90 in Drummond	MT 141 near Helmville	01945-11-071945	current	Section north of Helmville replaced by MT 141 in 1978
S-272	2.024	3.257	S-271 near Helmville	US 12 in Avon	01945-11-071945	01977-01-011977	Replaced by MT 141
S-272	2.024	3.257	Montana State Prison	S-275 in Deer Lodge	01987-12-011987	current
S-273	12.181	19.603	MT 48 near Opportunity	I-90 in Galen	01943-01-011943	current
S-274	—	—	MT 43 near Wise River	MT 1 near Opportunity	01943-01-011943	01985-01-011985	Restored in 2001 as S-569
S-275	—	—	—	—	01943-01-011943	01977-01-011977
S-275	3.045	4.900	I-90 in Deer Lodge	I-90 near Deer Lodge	01987-12-011987	current
S-276	7.863	12.654	I-90 near Rocker	Rocker	01943-01-011943	current
S-277	33.556	54.003	US 212 in Hammond	S-323 near Ridgeway	01952-01-011952	current
S-278	61.092	98.318	MT 43 in Wisdom	I-15/S-222 in Dillon	01943-01-011943	current
S-279	38.965	62.708	I-15/US 287/S-453 in Helena	MT 200 near Flecher Pass	01943-01-011943	current
S-280	16.050	25.830	I-15 in Helena	Trout Creek Canyon	01943-01-011943	current
S-281	—	—	MT 2 at Cardwell	I-15 at Boulder	01943-01-011943	01977-01-011977	Replaced by MT 69
S-282	—	—	—	—	01943-01-011943	01945-01-011945
S-282	3.575	5.753	Jack Mountain	I-15/S-518 near Montana City	01987-10-221987	current
S-283	6.434	10.355	Pony	US 287 in Harrison	01943-01-011943	current
S-284	42.073	67.710	US 12/US 287 near Canyon Ferry	US 12 near Townsend	01943-01-011943	current
S-285	9.371	15.081	Radersburg	US 287 in Toston	01943-01-011943	current
S-286	3.930	6.325	S-205 near Three Forks	Trident	01943-01-011943	current
S-287	—	—	MT 2 in Three Forks	Williams Bridge Road south of Willow Creek	01943-01-011943	current
S-288	16.176	26.033	S-347 in Amsterdam	I-90/S-346 in Manhattan	01943-01-011943	current
S-289	—	—	US 287 in Norris	US 191/S-291 near Four Corners	01943-01-011943	01977-01-011977	Replaced by MT 84
S-290	16.247	26.147	S-205 in Belgrade	16 Mile Creek near Maudlow	01943-01-011943	current
S-291	—	—	S-205 in Belgrade	I-90/MT 85 in Belgrade	01943-01-011943	02001-01-012001	Now Jackrabbit Lane; prior to 1977, this road continued south to Four Corners via what is now MT 85
S-292	—	—	—	—	01943-01-011943	01977-01-011977
S-292	8.789	14.145	S-548 in Evergreen	MT 40 near Whitefish	01996-02-071996	current
S-293	—	—	US 191/I-90 Bus. in Bozeman	US 89 near Wilsall	01945-11-071945	01977-01-011977	Replaced by MT 86
S-294	29.169	46.943	US 89 near Horse Butte	US 12 near Martinsdale	01943-01-011943	current
S-295	16.379	26.359	I-90 near Livingston	I-90 near Mission	01943-01-011943	current
S-296	—	—	US 12 in Two Dot	Lebo Lake	01943-01-011943	01977-01-011977	Now Two Dot Highway
S-297	37.818	60.862	US 12/MT 3 in Shawmut	MT 3 in Judith Gap	01943-01-011943	current
S-298	25.655	41.288	Boulder Ranger Station	US 191 in Big Timber	01943-01-011943	current
S-299	—	—	—	—	01943-01-011943	01977-01-011977
S-300	13.341	21.470	Big Coolie Creek	US 12/MT 3/S-238 in Ryegate	01943-01-011943	current
S-301	—	—	MT 6 in Lavina	I-90 in Billings	01943-01-011943	01956-01-011956	Replaced by MT 3
S-302	14.322	23.049	Molt	MT 3 in Billings	01943-01-011943	current
S-303	—	—	—	—	01943-01-011943	01977-01-011977
S-304	—	—	Shepherd	US 312	01943-01-011943	01977-01-011977	Now Shepherd Road
S-305	—	—	Laurel	S-302 in Billings	01943-01-011943	01977-01-011977	Now 72nd Street and S-532 (King Avenue)
S-306	25.273	40.673	MT 78 in Columbus	Rapelje	01945-11-071945	current
S-307	—	—	US 212 at Red Lodge	I-90 at Columbus	01943-01-011943	01977-01-011977	Replaced by MT 78
S-308	14.383	23.147	US 212 in Red Lodge	MT 72 in Belfry	01943-01-011943	current	Original route extended east to Bridger, now part MT 72
S-309	—	—	—	—	01943-01-011943	01972-01-011972
S-310	41.348	66.543	I-94 in Custer	US 12 near Musselshell	01943-01-011943	current
S-311	25.915	41.706	S-310 in Myers	I-94 in Hysham	01943-01-011943	current
S-312	—	—	—	—	01943-01-011943	01962-01-011962
S-313	38.588	62.101	Fort Smith	MT 47 in Hardin	01943-01-011943	current
S-314	44.342	71.362	WYO 338 near Decker	US 212 near Busby	01946-10-251946	current
S-315	—	—	US 212 in Lame Deer	North of I-94 near Forsyth	01943-01-011943	01977-01-011977	Replaced by MT 45
S-316	—	—	—	—	01943-01-011943	01945-01-011945
S-317	—	—	US 93 in Kalispell	MT 35 in Kalispell	01943-01-011943	current
S-318	—	—	Swords Park	Billings Municipal Airport	01943-01-011943	01974-01-011974	Now East Airport Road
S-319	—	—	US 212 near Broadus	Wyoming border south of Biddle	01943-01-011943	01967-01-011967	Replaced by MT 59
S-320	6.070	9.769	US 12 near Plevna	Ismay	01943-01-011943	current
S-321	—	—	—	—	01943-01-011943	01977-01-011977
S-322	26.908	43.304	Medicine Rocks	MT 7 near Baker	01943-01-011943	current
S-323	71.126	114.466	US 212/S-326 in Alzada	MT 7 in Ekalaka	01943-01-011943	current
S-324	34.429	55.408	SH 29 at Bannock Pass	I-15 near Clark Canyon Dam	01945-11-071945	current
S-325	13.353	21.490	US 2 in Chinook	North Chinook Reservoir	01946-05-201946	current
S-326	—	—	MT 35 in Bigfork	S-209 near Bigfork	01954-01-011954	01977-01-011977	Replaced by MT 83
S-326	1.683	2.709	WYO 112 near Alzada	US 212/S-323 in Alzada	01990-02-271990	current
S-327	15.043	24.209	ND 1804 at Fort Union	US 2 Bainville	01953-08-101953	current
S-328	—	—	MT 3 in Broadview	MT 3 in Acton	01953-08-101953	01977-01-011977	Now 21 Mile Road and Oswald Road
S-328	18.843	30.325	S-323 near Ekalaka	SD 20 near Capitol	01994-10-131994	current
S-329	—	—	—	—	01943-01-011943	01977-01-011977
S-330	36.924	59.423	MT 68 in Cascade	I-15 in Ulm	01945-11-071945	current
S-331	10.072	16.209	US 87/US 89 in Belt	S-228 near Highwood	01945-11-071945	current
S-332	50.391	81.096	S-447 near Brandenburg	MT 59 near Twelve Mile Dam	01945-11-071945	current
S-333	—	—	US 12 east of Miles City	Mizpah	01945-11-071945	01983-01-011983	Now Mizpah Road and Trail Creek Road
S-334	—	—	Port of Scobey	MT 5 in Scobey	01945-11-071945	01962-01-011962	Replaced by MT 13
S-334	3.760	6.051	Beaver Creek Reservoir	US 87 in Laredo	01994-09-011994	current
S-335	14.598	23.493	Balier Reservoir	I-94 in Glendive	01945-11-071945	current
S-336	14.595	23.488	MT 7 near Rush Hall	ND 16 near Carlyle	01945-11-071945	current
S-337	—	—	—	—	01956-01-011956	01957-01-011957
S-338	21.558	34.694	S-241 near Harlem	Hogeland	01954-01-291954	current
S-339	—	—	US 89 near Wilsall	Smith Creek Road northeast of Wilsall	01954-01-291954	01977-01-011977	Now Shields River Road
S-340	18.501	29.774	Mildred	I-94 in Fallon	01954-01-291954	current
S-341	21.930	35.293	MT 200 near Jordan	Fort Peck Lake	01954-05-151954	current
S-342	0.859	1.382	US 212 near Crow Agency	Little Big Horn Battlefield	01954-12-131954	current
S-343	43.227	69.567	I-15/S-215 in Oilmont	US 2 near Galata	01954-03-261954	current
S-344	35.648	57.370	US 2 in Brockton	MT 16 in Froid	01954-03-261954	current
S-345	12.036	19.370	US 191 in Gallatin Gateway	Kagy Boulevard in Bozeman	01951-10-311951	current
S-346	7.975	12.835	I-90/S-288 in Manhattan	S-290 at Manhattan city limits	01946-10-251946	current
S-347	6.226	10.020	S-288 in Amsterdam	MT 85 in Belgrade	01945-11-071945	current
S-348	13.974	22.489	Gilles	MT 1 in Philipsburg	02945-11-072945	current
S-350	5.487	8.830	Homestead	MT 16 near Medicine Lake	01954-05-061954	current
S-352	5.093	8.196	US 93 in Dayton	Lake Mary Ronan	01945-11-071945	current
S-357	26.800	43.130	Ruby River Reservoir	MT 287 in Alder	01945-11-071945	current
S-358	27.838	44.801	MT 44 in Valier	US 2 in Cut Bank	01954-09-011954	current
S-359	15.964	25.692	MT 2/MT 69 in Harrison	MT 2 in Cardwell	01945-11-071945	current
S-360	18.217	29.317	Fort Logan	US 12/US 89 in White Sulphur Springs	01945-11-071945	current
S-363	11.203	18.029	US 2 in Dodson	US 191 in Malta	01945-11-071945	current
S-365	24.231	38.996	Brady	S-225 near Carter	01945-11-071945	current
S-366	49.245	79.252	I-15 near Ledger	S-223 near Chester	01945-11-071945	current
S-370	1.954	3.145	US 93 near Victor	S-203 near Stevensville	01945-11-071945	current
S-373	4.529	7.289	US 93 in Woodside	Corvallis	01945-11-071945	current
S-374	6.503	10.466	MT 5 in Archer	Outlook	01945-11-071945	current
S-379	18.008	28.981	I-15/S-221 near Dutton	S-225 near Carter	01945-11-071945	current
S-381	16.370	26.345	Colding Creek	US 12 near Roundup	01945-11-071945	current
S-382	15.703	25.272	MT 28 near Hot Springs	MT 200 in Perma	01945-11-071945	current
S-384	57.052	91.816	MT 47 in Hardin	I-94 near Sanders	01945-11-071945	current
S-386	1.534	2.469	US 87 in Kershaw	MT 80 in Fort Benton	01945-11-071945	current
S-387	2.646	4.258	MT 80 in Fort Benton	US 87 in Loma	01945-11-071945	current
S-390	—	—	US 12 in Missoula	US 12 in Missoula	01945-11-071945	01974-01-011974	Now 39th Street and Russell Street
S-391	16.563	26.656	Yarger	US 212/MT 59 in Broadus	01945-11-071945	current
S-393	6.594	10.612	Newcomb	MT 2 in Butte	01945-11-071945	current
S-396	16.908	27.211	S-211 in Harlem	Coburg	01946-10-251946	current	Former routing of US 2
S-398	—	—	county road 4.7 miles north of MT 48	MT 48 3 miles east of Anaconda	01946-10-251946	01956-01-011956	Replaced by S-273
S-398	7.009	11.280	US 212/MT 59 in Broadus	Powderville	02000-05-252000	current
S-399	25.228	40.601	I-90/MT 55 in Whitetail	MT 69 in Boulder	01946-10-251946	current
S-400	12.335	19.851	Buffalo	S-239 near Hobson	01946-10-251946	current
S-401	7.903	12.719	S-532 near Laurel	S-302 near Molt	01987-10-131987	current	An older S-401 was replaced by MT 55
S-402	7.009	11.280	US 212/MT 59 in Broadus	Powderville	01946-10-251946	01987-01-011987	Now S-398
S-405	28.371	45.659	US 2 near Bainville	MT 16 in Froid	01946-10-251946	current
S-408	19.568	31.492	US 287 near Gilman	US 89 in Fairfield	01946-10-251946	current
S-409	40.499	65.177	US 2 in Chester	MWYO 880 near Whitlash	01946-10-251946	current
S-411	10.744	17.291	S-205/S-570 in Bozeman	Springhill Cemetery	01946-10-251946	current
S-412	—	—	S-411 near Bozeman	S-205 bridge in Bozeman	01995-01-011995	current
S-413	24.709	39.765	MT 7 near Carlyle	MT 7 near Saint Phillip	01948-07-301948	current
S-416	14.113	22.713	S-418 near Pryor	I-90/US 212 in Billings	01950-03-201950	current
S-417	16.530	26.602	S-366 near Ledger	US 2 near Shelby	01950-07-031950	current
S-418	16.124	25.949	S-416 near Pryor	Pryor	02000-01-272000	current
S-419	21.254	34.205	Limestone	MT 78 near Absarokee	01951-03-271951	current
S-420	6.929	11.151	S-419 in Nye	MT 78 near Absarokee	01951-01-161951	current
S-421	18.167	29.237	MT 78 near Columbus	US 212 near Joliet	01951-01-161951	current
S-422	8.521	13.713	MT 41 in Silver Star	MT 55 near Waterloo	01951-01-161951	current
S-424	17.108	27.533	US 93 in Kalispell	US 93 west of Whitefish	01976-12-281976	current
S-426	26.573	42.765	US 87/MT 3/MT 200 near Kolin	US 191 in Lewistown	01951-12-281951	current
S-427	12.319	19.826	US 89 at Currie Spring	US 87/MT 3/MT 200 in Raynesford	01951-12-281951	current
S-428	—	—	US 191 in Judith Gap	Living Springs Road	01952-01-011952	01977-01-011977	Replaced by an extended S-297
S-428	—	—	Zoo Drive in Billings	S-429 (now Shiloh Road) in Billings	01999-01-011999	02001-01-012001	I-90 south Frontage Road
S-429	—	—	Zoo Drive in Billings	S-428 (now the I-90 Frontage Road) in Billings	01952-01-011952	02001-01-012001	Now Shiloh Road
S-430	3.802	6.119	S-280 in Helena	S-284 near Canyon Creek	01987-07-281987	current
S-431	19.999	32.185	US 89/S-565 near Fairfield	I-15 in Power	01955-11-231955	current
S-432	46.932	75.530	US 2 in Rudyard	US 287/S-223 in Big Sandy	01955-12-021955	current
S-434	18.032	29.020	I-15 near Wolf Creek	MT 200 near Johnson Mountain	01955-12-021955	current
S-435	15.361	24.721	US 287 in Augusta	Johnson Mountain	01987-07-281987	current
S-437	8.895	14.315	S-285 near Radersburg	US 287 Toston	01956-05-041956	current
S-438	52.465	84.434	US 2 in Nashua	S-248 nearGlentana	01955-11-231955	current
S-441	7.829	12.600	I-90 near Gregson	MT 1 near Opportunity	01956-02-091956	current
S-444	19.773	31.822	US 2 near Blackfoot	S-213 near Bonita	01956-07-311956	current
S-446	2.778	4.471	I-94/S-446 in Rosebud	US 212 in Ashland	01956-05-171956	current
S-447	52.478	84.455	US 212 in Ashland	I-94/S-446 in Rosebud	01956-05-171956	current
S-448	30.108	48.454	US 87 in Box Elder	US 2/S-449 Gildford	01955-12-051955	current
S-449	16.590	26.699	US 2/S-448 in Gildford	Milk River	01955-12-071955	current
S-451	38.047	61.231	WYO 345 south of Wyola	I-90/US 87 north of Wyola	01988-02-261988	current	Formerly US 87
S-453	5.121	8.241	I-15/US 287/S-279 in Helena	Lake Helena	01955-02-201955	current
S-454	3.330	5.359	Unionville	US 12 in Helena	01955-02-201955	current
S-457	1.506	2.424	S-451 in Wyola	I-90/US 87 near Wyola	01988-02-281988	current
S-462	38.464	61.902	MT 59 in Rock Springs	MT 200 near Brockway	01956-12-071956	current
S-463	14.202	22.856	Willow Creek Dam	I-90 in Lodge Grass	01957-03-081957	current
S-464	33.671	54.188	US 2/US 89 in Browning	US 89 in Babb	01957-06-281957	current
S-466	2.160	3.476	Hansons Creek Road near Lewistown	S-238 near Lewistown	01956-11-071956	current
S-467	31.745	51.089	MT 200S in Lindsay	MT 200 in Circle	01957-03-271957	current
S-470	24.032	38.676	MT 200S in Lindsay	S-254 in Bloomfield	01957-03-271957	current
S-471	22.069	35.517	NFS Route 9 at Idaho border near Murray, Idaho	MT 200 near Thompson Falls, Montana	01957-01-291957	current
S-472	16.5	26.6	US 93 in Sula	Reynolds Creek Road near Martin Creek Campground	—	—
S-473	14.394	23.165	Painted Rocks State Park	US 93 near Conner	01957-05-211957	current
S-474	3.859	6.210	S-263 near Frenchtown	I-90/US 93/MT 200 in Wye	01957-06-271957	current
S-478	21.995	35.398	US 191 near Big Timber	Stephens Hill Road near Rapelje	01957-09-231957	current
S-480	19.696	31.698	S-201 near Richey	US 2 in Sprole	01957-12-051957	current
S-482	7.176	11.549	US 2 near Libby Creek	US 2 near Libby	01958-03-051958	current
S-484	27.863	44.841	Fort Howe	US 212 near Ashland	01958-09-031958	current
S-486	22.646	36.445	US 2 in Columbia Falls	Camas Creek entrance of Glacier National Park	01958-09-161958	current
S-487	7.223	11.624	US 93 in Whitefish	Whitefish Mountain Resort at Big Mountain	01958-09-161958	current
S-489	18.006	28.978	MT 59 near Miles City	Kinsey	01985-02-191985	current
S-493	4.877	7.849	MT 7 near Baker	Anticline Road near Plevna	01959-05-141959	current
S-494	22.743	36.601	MT 7 in Willard	US 12 in Plevna	01959-05-141959	current
S-500	30.407	48.935	US 12 near Melstone	MT 200 in Mosby	01960-03-081960	current
S-503	12.166	19.579	US 93A near Kalispell	US 2 in Kalispell	01960-11-031960	current
S-504	12.847	20.675	S-340 in Marsh	Cabin Creek	01960-12-131960	current
S-507	2.533	4.076	I-90 in Alberton	I-90 near Huson	01961-07-071961	current
S-508	29.272	47.109	US 2 near Troy	S-567 in Yaak	01961-09-121961	current
S-509	37.499	60.349	I-15 in Monida	Red Rock Lakes National Wildlife Refuge	01961-09-121961	current
S-511	13.790	22.193	MT 5/S-251 in Flaxville	Whitetail	01962-01-041962	current	Was MT 13, formerly ended at Hwy 34 on the Canadian border until Port of Whitetail closed
S-512	13.790	22.193	MT 1/S-513 in Hall	New Chicago Road near Hall	01962-01-151962	current
S-513	9.663	15.551	Lower Willow Creek Road near Hall	MT 1/S-512 in Hall	01962-01-151962	current
S-516	6.008	9.669	S-258 near Dagmar	S-517 in Coalridge	01961-12-161961	current	Old S-516 ran from US 2 to Katy Lake
S-517	12.291	19.780	MT 16 near Antelope	S-516 in Coalridge	01961-12-161961	current
S-518	4.468	7.191	I-15/S-282 in Montana City	US 12/US 287 in East Helena	01961-11-281961	current
S-522	2.368	3.811	I-94 in Huntley	Worden	01962-08-231962	current
S-528	18.703	30.100	Prairie Elk Road near Oswego	MT 13 near Macon	01998-07-291998	current
S-529	9.959	16.027	Clear Creek Road near Chinook	S-240 in Chinook	01963-09-191963	current
S-531	6.308	10.152	US 93 in Grantsdale	US 93/S-269 in Hamilton	01963-10-071963	current
S-532	17.628	28.370	I-90/US 212/US 310 in Laurel	I-90/US 212 in Billings	01964-02-171964	current
S-534	27.894	44.891	US 89 in Dupuyer	S-218 in Conrad	01964-06-111964	current
S-537	23.126	37.218	US 2 in Hinsdale	Snake Creek Road near Hinsdale	01965-03-011965	current
S-540	31.859	51.272	US 89 near Miner	US 89 near Pine Creek	01966-02-251966	current
S-541	10.691	17.205	S-239 Utica	US 87/MT 3/MT 200 in Windham	01966-11-071966	current
S-543	24.160	38.882	MT 200 in Jordan	Hell Creek State Park	01967-02-141967	current
S-544	32.937	53.007	MT 59 in Biddle	US 212 in Boyes	01968-04-221968	current
S-547	6.477	10.424	MT 81 in Denton	Bear Springs Road near Denton	01969-06-231969	current
S-548	6.521	10.495	US 93 near Whitefish	US 2 in Kalispell	01969-09-021969	current
S-551	6.515	10.485	US 87/MT 3/MT 200 in Geyser	Braun Creek Road near Geyser	01971-06-081971	current
S-552	33.090	53.253	I-15 at Sunburst	S-343 near Whitlash	01973-12-211973	current
S-556	44.200	71.133	MT 200 near Snider	US 2 near Happy's Inn	01971-07-261971	current
S-559	3.118	5.018	US 93/MT 200 near Arlee	Jocko Canyon Road near Arlee	01973-05-071973	current
S-564	24.992	40.221	US 87 in Carter	S-223 near Loma	01975-10-061975	current
S-565	7.134	11.481	MT 200 in Simms	US 89/S-441 near Fairfield	01975-10-071975	current
S-566	51.835	83.420	S-314 near Tongue River Reservoir State Park	US 212 in Ashland	01975-10-301975	current
S-567	35.943	57.845	MT 37 in Libby	S-508 in Yaak	01994-03-151994	current
S-568	2.673	4.302	I-94 near Pompeys Pillar	Pompeys Pillar	01976-07-061976	current
S-569	22.020	35.438	MT 43 near Wise River	MT 1 near Opportunity	02001-03-292001	current
S-571	1.168	1.880	US 89 in Emigrant	S-540 near Emigrant	02001-06-012001	current
S-572	1.750	2.816	S-540 near Emigrant	Chico Hot Springs	02001-06-012001	current
S-573	14.870	23.931	MT 16 in Medicine Lake	Katy Lake	02001-06-012001	current
S-574	10.970	17.655	I-90 in Huson	US 93/MT 200 near Wye	02006-01-252006	current
Former

Former highways

• S-353 - Round Butte to Moiese
• S-355 - Helena to xx
• S-356 - US 12 in Helena to Central Avenue in Helena (formerly ended at S-279 near Birdseye before decommissioning)
• S-364 - US 191 in Malta to South Black Coulee Road near Malta
• S-371 - Melville to Twodot
• S-375 - Continental Drive—downtown Butte to Old US 10 (MT 2) southeast of Butte
• S-376 - Fort Belknap Agency to US 191 near Landusky (replaced by MT 66)
• S-377 - Stevensville to Bitterroot National Forest
• S-397 - Belfry to Wyoming border (replaced by MT 72)
• S-404 - Brockton to xx
• S-425 - Roscoe to Fishtail
• S-436 - US 2 near Chinook to Saskatchewan border (now local Blaine County roads)
• S-459 - Great Falls to S-226
• S-461 - MT 200 near Paradise to St. Regis (replaced by MT 135)
• S-476 - S-540 near Pray to Montanapolis Springs
• S-483 - Port of Del Bonita to Santa Rita (replaced by an extension of S-213)
• S-485 - Trailcreek to Columbia Falls
• S-495 - Great Falls to xx
• S-496 - Bainville to MT 16
• S-498 - In Great Falls (replaced by bypass US 87)
• S-499 - Follows the north end of Hebgen Lake from MT 287 to US 191 (replaced by US 287 in 1964)
• S-501 - MT 38 at Grantsdale to Sleeping Child Hot Springs
• S-505 - Lewistown to Glengarry
• S-506 - Yaak to Libby (replaced by S-567)
• S-510 - Brockway to Dry Ash Creek
• S-514 - Poplar to Plentywood
• S-563 - I-90 near Springdale to Springdale
• S-570 - S-205/S-411 in Bozeman to I-90 in Bozeman

See also

•  U.S. Roads portal

References

1. Multimodal Planning Bureau, Rail, Transit & Planning Division (March 2017). "A Guide to Functional Classification, Highway Systems and Other Route Designations in Montana" (PDF). Montana Department of Transportation. pp. 5–6. Retrieved April 8, 2019.
2. Montana Department of Transportation (2013). "Montana Road Log" (PDF). Helena: Montana Department of Transportation. Retrieved March 6, 2017.
3. "Montana Off System Routes" (GIS data). Montana Department of Transportation. Retrieved April 8, 2017.
4. "Federal-Aid Road Log" (PDF). Montana Highway Department Highway Planning Survey. Montana Highway Department. January 1, 1943. Retrieved April 7, 2019 – via Internet Archive.
5. Montana State Highway Commission (1960). State Highway Map (PDF) (Map). Helena: Montana State Highway Commission. Retrieved April 8, 2018.

External links

• 2013 Montana Road Log