Montana Highway 200 (MT 200) in the U.S. state of Montana is a route running east–west covering the entire state of Montana. From the starting point at ID 200, near Heron, the highway runs east to ND 200 near Fairview. It is part of a chain of state highways numbered 200 that extend from Idaho across Montana, North Dakota, and Minnesota, totaling approximately 1,356 miles (2,182 km) long. At 706.272 mi (1,136.635 km), Montana Highway 200 is also the longest route signed as a state highway in the United States. Highway 200 helps to connect many small towns located in central Montana and the vast plains area of eastern Montana, to larger western Montana cities such as Great Falls and Missoula.
|Maintained by MDT|
|Length||706.584 mi (1,137.137 km)|
|Lewis and Clark Trail|
|West end||SH-200 at the Idaho state line|
| US 93 from Ravalli to Missoula|
I-90 from Wye to Bonner
US 12 from Missoula to Bonner
US 287 near Milford Colony
US 89 from Sun River to Armington
I-15 from Vaughn to Great Falls
US 87 from Great Falls to Grass Range
US 191 from near Hobson to Lewistown
|East end||ND 200 at the North Dakota state line|
|Counties||Richland, Dawson, McCone, Garfield, Petroleum, Fergus, Judith Basin, Cascade, Lewis and Clark, Powell, Missoula, Lake, Sanders|
At its western end at the Idaho state line, MT 200 follows the Clark Fork River at the feet of the Cabinet Mountains eastward for 85 miles (137 km) until it meets the Flathead River at MT 135. It then follows the Flathead River east for 25 miles (40 km) to Dixon where the Flathead River turns north. MT 200 continues east following the Jocko River for 6 miles (10 km) until it intersects with US 93 at Ravalli. The two highways share a 27-mile (43 km) concurrency and travel south I-90, where they head east into Missoula. MT 200 follows I-90 through Missoula for 14 miles (23 km), with US 93 departing and US 12 joining the route along the way, leaving the interstate near Milltown. The highway runs parallel to the Blackfoot River and is subject to hazardous driving conditions in the winter, particularly due to black ice. From I-90, the road travels 74 miles (119 km) east to Lincoln, and another 39 miles (63 km) where it crosses Rogers Pass on the Continental Divide. It continues east for 21 miles (34 km) to Bowman's Corner where it intersects US 287, and then another 30 miles (48 km) to Sun River where it merges with US 89. The two highways travel for 8 miles (13 km) east to I-15 near Vaughn, where they join the interstate and travel south for 12 miles (19 km) to Great Falls.
In Great Falls, MT 200 and US 89 leave I-15, where they become concurrent with MT 3, share a brief concurrency with I-315 (I-15 Business), and merge with US 87, following 10th Avenue South eastward through the city. The four routes of US 87, US 89, MT 3, and MT 200 share a 23-mile (37 km) concurrency from Great Falls to Armington Junction (near Belt), where US 89 heads south and the three remaining routes continue east for 65 miles (105 km). At Eddie's Corner (near Moore), the routes meet US 191 where MT 3 and US 191 share a common alignment to Harlowton. US 87, US 191, and MT 200 share a 14-mile (23 km) concurrency to Lewistown, where US 191 heads north, and US 87/MT 200 continue another 34 miles (55 km) to Grass Range. At Grass Range, MT 200 and US 87 end their 135-mile-long (217 km) concurrency and MT 200 continues east for 98 miles (158 km) to MT 59 in Jordan. MT 200 continues 68 miles (109 km) east to Circle where it intersects MT 13 and MT 200S (an auxiliary route that connects MT 200 with Glendive). It continues 71 miles (114 km) east until it intersects MT 16 and MT 23, where MT 16 and MT 200 head north into Sydney and share a 2.5-mile-long (4.0 km) concurrency. MT 200 leaves Sydney and travels northeast for 11 miles (18 km) to Fairview, where it turns east and crosses into North Dakota.
MT 200 follows the following MDT corridors:
|West end||East end||Notes|
|P-6 (C000006)||115.787||186.341||Idaho state line||Ravalli|
|N-5 (C000005)||27.215||43.798||Ravalli||Wye||US 93 concurrency|
|I-90 (C000090)||13.881||22.339||Wye||Bonner||I-90 concurrency|
|N-24 (C000024)||140.184||225.604||Bonner||Sun River|
|N-3 (C000003)||7.763||12.493||Sun River||Vaughn||US 89 concurrency|
|I-15 (C000015)||11.604||18.675||Vaughn||Great Falls||I-15 concurrency|
|I-315 (C000315)||0.828||1.333||Great Falls||I-315 concurrency|
|N-60 (C000060)||24.726||39.793||Great Falls||Armington||US 87 / US 89 / MT 3 concurrency|
|N-57(C000057)||279.109||449.182||Armington||Circle||Includes US 87 / US 191 / MT 3 concurrencies|
|P-51 (C000051)||71.047||114.339||Circle||Jct. MT 16 / MT 23 south of Sidney|
|N-20 (C000020)||14.128||22.737||Jct. MT 16 / MT 23 south of Sydney||North Dakota state line||Includes MT 16 concurrency|
Today's Highway 200 is part of a four-state chain of such routes, but it did not begin that way. It was assembled from other state and federal routes over the years.
The status of the routes and route segments that became Highway 200 in 1937.
- The section from the Idaho line to Ravalli was the original MT 3.
- No concurrency from Ravalli to Missoula on US 93 or US 10.
- The section from Bonner to Sun River was then MT 20, and much was yet to be constructed. The route even followed segments of today's MT 21 to Augusta and future US 287 (then MT 33).
- No concurrency from Sun River to Grass Range along US 87.
- The section from Grass Range to Circle was part of the original MT 18.
- The remainder of MT 18 ran from Circle to Glendive, today's MT 200S.
- The section from Circle to Sidney was Montana 23, ending at then MT 14.
- MT 14 ran the rest of the way to Fairview.
Between 1948 and 1959, many construction projects and route redesignations with concurrencies made MT 20 from Bonner to Sidney the baseline for today's MT 200. MT 23N replaced MT 14 from Sidney to Fairview and MT 20S replaced MT 18 from Circle to Glendive.
In 1960, MT 20 picked up the Sidney to Fairview segment.
By 1969, the entire MT 20 had become MT 200 and included the former US 10A from Idaho to Wye, and following US 10/93 through Missoula. MT 20S became 200S.
SH-200 west – Sandpoint
|Continuation into Idaho|
MT 56 north to US 2 – Troy
|Southern terminus of MT 56|
S-472 south (Blue Slide Road)
S-471 west (Prospect Creek Road)
|Forest Highway 7, seasonal access to Thompson Pass (S-471) and Cooper Pass (FR-7623, Prospect Creek Road)|
|Thompson Falls||49.544||79.733|| |
S-472 north (Blue Slide Road)
S-556 north (Thompson River Road)
MT 28 east – Hot Springs, Kalispell, Glacier Park
|Western terminus of MT 28|
MT 135 south to I-90 – St. Regis
|Northern terminus of MT 135|
S-382 north – Hot Springs
S-212 north – Bison Range, Moiese, Charlo
US 93 north – Kalispell
|Western end of US 93 overlap|
S-559 east (Jocko Road)
S-574 west (Frenchtown Frontage Road)
I-90 west – Coeur d'Alene
|Western end of I-90 overlap; exit numbers follow I-90|
I-90 BL east / US 93 south (Reserve Street) – Hamilton
|Eastern end of US 93 overlap|
I-90 BL west / US 12 west (Van Buren Street) / Lewis and Clark Trail
|Western end of US 12 overlap|
|East Missoula||153.938||247.739||107||East Missoula|
|West Riverside||156.883||252.479||109|| |
I-90 east / US 12 east – Butte
|Eastern end of I-90/US 12 overlap|
|Clearwater Junction||189.463||304.911|| |
MT 83 north – Seeley Lake, Kalispell, Glacier National Park
MT 141 south – Avon, Helmville
|Lewis and Clark||||240.582||387.179|| |
S-279 south – Helena
|Rogers Pass||245.283||394.745||Continental Divide (elevation 5,610 ft or 1,710 m)|
S-434 south – Wolf Creek, Bean Lake
|Bowman's Corner||266.653||429.136||US 287 – Augusta, Wolf Creek|
MT 21 west – Augusta
|Sun River||297.067||478.083|| |
US 89 north – Fairfield, Choteau, Glacier National Park
|Western end of US 89 overlap|
I-15 north / Lewis and Clark Trail – Shelby
|Western end of I-15 overlap; exit numbers follow I-15|
To US 87 north / Northwest Bypass
|Eastbound exit and westbound entrance|
|Great Falls||314.997||506.939||280|| |
I-15 BL south (Central Avenue W.) to US 87 north
I-15 BL north / I-315 east / MT 3 east (10th Avenue South)
I-15 south / Lewis and Clark Trail – Helena
|Eastern end of I-15 overlap; western end of I-315 / I-15 Bus. / MT 3 overlap|
western termini of unsigned I-315 / I-15 BL / MT 3
|316.921||510.035||0||14th Street SW||Exit number follows I-15 Bus. (I-315)|
|317.414||510.828||Fox Farm Road / 6th Street SW||Eastern terminus of I-315 and overlap|
|I-15 BL (5th Street South / 6th Street South)||One way pair; eastern end of I-15 Bus. overlap|
US 87 north (14th Street South / 15th Street South) / Lewis and Clark Trail – Black Eagle, Havre
|One way pair; western end of US 87 overlap|
US 87 Byp. north (57th Street) – Malmstrom AFB
S-228 north / S-227 south – Highwood, Sand Coulee
S-331 north – Belt
|Armington Junction||342.200||550.718|| |
US 89 south – Monarch, White Sulphur Springs
|Eastern end of US 89 overlap|
|Judith Basin||||352.727||567.659|| |
S-427 south – White Sulphur Springs
S-551 north – Geyser
MT 80 north – Stanford, Fort Benton
S-207 north – Benchland
S-239 west – Hobson, Utica
|Fergus||Eddies Corner||406.897||654.837|| |
US 191 south / MT 3 south / Nez Perce Trail – Harlowton
|Eastern end of MT 3 overlap; western end of US 191 overlap|
US 191 north / US 87 Byp. south (Truck Bypass) / Nez Perce Trail
|Eastern end of US 191 overlap|
US 87 Byp. (1st Avenue North; Truck Bypass) to US 191 / S-238 south – Great Falls
US 87 south / MT 19 north – Malta, Billings
|Eastern end of US 87 overlap; southern terminus of MT 19|
S-244 south – Winnett
MT 59 south – Miles City
S-245 west – Hell Creek State Park, Airport
|Access to Hell Creek State Park via S-543 (jct 280 ft from MT 200)|
|Flowing Well||588.930||947.791|| |
MT 24 north – Fort Peck
S-253 south – Brockway
MT 13 north – Wolf Point
MT 200S east – Glendive
|Dawson||Richey||649.106||1,044.635||S-254 – Richey, Glendive|
MT 16 south / MT 23 east / Lewis and Clark Trail – Watford City, Glendive
|Western end of MT 16 overlap|
MT 16 north – Regina, Culbertson, Airport
|Eastern end of MT 16 overlap|
ND 200 east / Lewis and Clark Trail – Williston
|Continuation into North Dakota|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
|Length||45.280 mi (72.871 km)|
Montana Highway 200S (MT 200S) is a spur route of MT 200 that branches off the main route near Circle and ends at the I-94 business loop in Glendive. MT 200S was originally part of MT 18, renamed MT 20S when MT 23 from Circle to Sidney was renamed MT 20 and received its current name when MT 20 was renamed MT 200. In the state road log, MT 200S picks up the mileposts from route N-57 (C000057) from mileposts 279.109 to 323.472, for a total of 45.280 miles (72.871 km).
|McCone||||0.000||0.000||MT 200 – Circle, Wolf Point, Sidney||Western terminus|
|West Glendive||44.363||71.395|| |
I-94 east – Bismarck
|I-94 exit 211; westbound exit and eastbound entrance|
I-94 BL to I-94 west – City Centre, Miles City
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Data and Statistics Bureau (2019). Montana Road Log (PDF) (Report). Helena: Montana Department of Transportation. Retrieved December 24, 2020.
- "New Map Changes Route 20". The Havre Daily News. October 18, 1967. p. 4. Retrieved June 19, 2018 – via Newspapers.com.
- Montana Department of Transportation (2019). Montana Official Highway Map (PDF) (Map). Helena: Montana Department of Transportation. §§ B-1, C-1, C-2, D-2, E-2, E-3, E-4, D-4, C-5, D-5, D-6, D-7, D-8, D-9, D-10, D-11, C-11, C-12. Retrieved January 2, 2021.
- MDT 2019, pp. 171–175: MP 0.000–115.787
- MDT 2019, pp. 57–58: MP 27.215–0.000
- MDT 2019, pp. 12–13: MP 95.483–109.364
- MDT 2019, pp. 95–98: MP 0.000–140.184
- MDT 2019, pp. 52–53: MP 7.975–0.000
- MDT 2019, p. 8: MP 289.607–278.063
- MDT 2019, p. 25: MP 0.000–0.828
- MDT 2019, pp. 119–121: MP 96.145–71.359
- MDT 2019, pp. 113–118: MP 0.000–279.109
- MDT 2019, p. 218: MP 0.000–71.047
- MDT 2019, pp. 89–90: MP 49.605–63.833
- Texaco; Rand McNally and Company (1937). Road map: Idaho, Mont., Wyo (Map). Chicago: Rand McNally and Company. Retrieved April 28, 2017 – via David Rumsey Map Library.[full citation needed]
- "Highway Route Number Changed". The Billings Gazette. October 2, 1967. p. 27. Retrieved June 19, 2018 – via Newspapers.com.