Interstate 90 in Montana

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Interstate 90
Main route of the Interstate Highway System

Length:

551.68 mi (887.84 km)

West end:

I-90 at Idaho state line

Major
junctions:

I-15 in Butte

I-115 in Butte

I-94 in Billings

East end:

I-90 at Wyoming state line

Montana Highways
< MT 89		US 91 >

In the U.S. state of Montana, Interstate 90 traverses much of the east-west length at nearly 552 miles, connecting motorists between northern Idaho and Wyoming.

[edit] History

Until 1995 in Montana near the Idaho border, I-90 was not a divided highway for a few stretches, having only a narrow paved median. From 1995 until 1999, the speed limit in Montana was "reasonable and prudent"; it is now 75 mph (120 km/h). On the I-90, at Exit 00 (right on the MT/ID border) is the Lookout Pass Ski Area, one exit east of there is the Hiawatha Trail (rails-to-trails).

[edit] Exit list

This section contains a table that is missing mileposts for one or more junctions. Please help by adding the missing mileposts.

County	Location	#	Destinations	Notes
Mineral		0	Lookout Pass
		5	Taft Area
		10	Saltese
		16	Haugan
		18	De Borgia
		22	Henderson
		25	Drexel
		26	Ward Creek Road	Eastbound exit and entrance
		30	Two Mile Road
		33	MT 135 – St. Regis
		37	Sloway Area
		43	Dry Creek Road
	Superior	47	S-257 – Superior
		55	Lozeau, Quartz
		61	Tarkio
		66	Fish Creek Road
		70	Cyr	Westbound exit and eastbound entrance
	Alberton	75	Alberton
Missoula		77	S-507 (Petty Creek Road) – Alberton
		82	Nine Mile Road
		85	Huson
		89	Frenchtown
		96	US 93 north / MT 200 west – Kalispell	West end of US 93/MT 200 overlap
		99	Airway Boulevard
	Missoula	101	I-90 Bus. east / US 93 south (Reserve Street) – Hamilton	East end of US 93 overlap
		104	Orange Street
		105	I-90 Bus. west / US 12 west (Van Buren Street)	West end of US 12 overlap
		107	East Missoula
		109	MT 200 east – Bonner, Great Falls	East end of MT 200 overlap
		113	Turah
		120	Clinton
		126	Rock Creek Road
Granite		130	Beavertail Road
		138	Bearmouth Area
	Drummond	153	MT 1 – Drummond, Phillipsburg	Eastbound exit and westbound entrance
	Drummond	154	To MT 1 – Drummond, Phillipsburg	Westbound exit and eastbound entrance
Powell		162	Jens
		166	Gold Creek
		170	Phosphate
		174	US 12 east – Garrison, Helena	East end of US 12 overlap; eastbound exit and westbound entrance
		175	To US 12 east – Garrison, Helena	No westbound entrance
		179	Beck Hill Road
	Deer Lodge	184	I-90 Bus. east – Deer Lodge
		187	I-90 Bus. west – Deer Lodge	No westbound entrance
		195	Racetrack
Deer Lodge		197	S-273 – Galen
		201	Warm Springs
		208	MT 1 – Anaconda, Opportunity
Silver Bow		211	S-441 – Gregson, Fairmont, Hot Springs
		216	Ramsay
		219	I-15 south – Dillon, Idaho Falls
	West end of I-15 overlap
		122	Rocker
		124	I-115 (I-15 Bus. north, I-90 Bus. east) – Butte City Center	Eastbound exit and westbound entrance
	Butte	126	Montana Street
	Butte	127	I-15 Bus. west / I-90 Bus. (Harrison Avenue)	Signed as exits 127A (south) and 127B (north) eastbound
	East end of I-15 overlap
		227	I-15 north – Helena
		228	Continental Drive
		233	Homestake
Jefferson		241	Pipestone
	Whitehall	249	MT 55 to MT 69 – Whitehall
		256	S-359 – Cardwell, Boulder
		267	Milligan Canyon Road
Broadwater		274	US 287 – Helena, Ennis
Gallatin		278	MT 2 / S-205 – Three Forks, Trident
		283	Logan, Trident
		288	S-288 to S-346 – Manhattan, Amsterdam
	Belgrade	298	Image:MT-sec-291.svg MT 85 / S-291 – Amsterdam, Belgrade, West Yellowstone
		305	S-412 (North 19th Avenue) / Springhill Road
	Bozeman	306	I-90 Bus. east / S-205 (North 7th Avenue) to US 191 south
	Bozeman	309	I-90 Bus. south / US 191 (Main Street)	West end of US 191 overlap
		313	Bear Canyon Road
		316	Trail Creek Road
		319	Jackson Creek Road
		324	Ranch Access
Park		330	I-90 Bus. east – Livingston
	Livingston	333	US 89 south – Yellowstone National Park, Livingston City Center	West end of US 89 overlap
		337	I-90 Bus. west – Livingston
		340	US 89 north – White Sulphur Springs	East end of US 89 overlap
		343	Mission Creek Road
		350	East End Access
		352	Ranch Access
Sweet Grass		354	S-563 – Springdale
		362	De Hart
		367	I-90 Bus. east / US 191 north – Big Timber, Harlowton	East end of US 191 overlap
		370	I-90 Bus. west to US 191 north – Big Timber, Harlowton
		377	Greycliff
		384	Bridger Creek Road
Stillwater		392	Reed Point
		396	Ranch Access
		400	Springtime Road
		408	MT 78 – Columbus
		426	Park City
Yellowstone		433	I-90 Bus. east – West Laurel	Eastbound exit and westbound entrance
	Laurel	434	US 212 west / US 310 – Laurel, Red Lodge	West end of US 212 overlap
		437	I-90 Bus. west / South Frontage Road – East Laurel
	Billings	443	Zoo Drive
		446	I-90 Bus. east / King Avenue West, Mullowney Lane – West Billings
		447	South Billings Boulevard – Billings City Center
		450	MT 3 (27th Street) – Billings City Center
		452	I-90 Bus. west / US 87 north – Roundup, Lockwood	West end of US 87 overlap
		455	Johnson Lane
		456	I-94 – Bismarck
		462	Pryor Creek Road
		469	Arrow Creek Road
Big Horn		478	Fly Creek Road
		484	Frontage Road – Toluca
	Hardin	495	I-90 Bus. east / MT 47 – Hardin City Center
		497	I-90 Bus. west (Third Street) – Hardin
		503	Dunmore
		509	Crow Agency (Baaxuwuaashe)
		510	US 212 east – Little Bighorn Battlefield, Broadus	East end of US 212 overlap
		514	Garryowen
		530	S-463 – Lodge Grass
		544	Wyola
		549	Aberdeen