Montana Highway 3

Montana Highway 3
Route information
Maintained by MDT
Length:	221.770 mi[1] (356.904 km)
Major junctions
South end:	I‑90 in Billings
	US 12 from Lavina to Harlowton US 191 from Harlowton to Hobson US 87 in Hobson US 89 in Armington US 87 in Great Falls
North end:	I‑15 / US 89 in Great Falls
Highway system
Montana Highways Secondary ← MT 2 MT 5 →

Montana State Highway 3 is a highway in central Montana extending north from Billings to Great Falls.^[2][3]

Major intersections

County	Location	mi	km	Destinations	Notes
Yellowstone	Billings	0.000	0.000	I‑90 (US 212) to I‑94 – Butte, Sheridan	I-90 exit 450
				I‑90 Bus. (1st Avenue North / Montana Avenue)
				Main Street - Airport	roundabout
Golden Valley		47.010	75.655	US 12 east – Roundup, Forsyth	South end of US 12 overlap
	Ryegate	63.285	101.847	S-238 north / S-300 south – Airport
Wheatland	Shawmut	76.929	123.805	S-297 north
		92.188	148.362	US 12 west / US 191 south – Harlowton, Big Timber	North end of US 12 overlap; south end of US 191 overlap
	Judith Gap	109.990	177.012	S-297 south
Fergus	Eddies Corner	131.421	211.502	US 87 south / US 191 north / MT 200 east – Lewistown	North end of US 191 overlap; south end of US 87 / MT 200 overlap
Judith Basin		137.574	221.404	S-239 west – Hobson, Utica
	Moccasin	141.350	227.481	S-426 north
		146.367	235.555	S-207 north – Benchland
		153.314	246.735	S-541 south
		159.419	256.560	MT 80 north – Stanford, Fort Benton
	Geyser	174.711	281.170	S-551 north – Geyser
		185.591	298.680	S-427 south – White Sulphur Springs
Cascade	Armington Junction	196.118	315.621	US 89 south – Monarch, White Sulphur Springs	South end of US 89 overlap
		199.721	321.420	S-331 north – Belt
		212.577	342.110	S-227 north / S-228 south – Sand Coulee, Highwood
				US 87 Byp. north (57th Street) – Malmstrom AFB, Montana Veterans Memorial, Lewis & Clark Interpretive Center, Giant Springs State Park
	Great Falls	218.776	352.086	US 87 north (15th Street South) – Black Eagle, Havre	North end of US 87 overlap
		219.429	353.137	I‑15 Bus. north (6th Street South)	South end of I-15 Bus. overlap
		220.942	355.572	Fox Farm Road / 6th Street Southwest	south end of I-315 overlap; south end of freeway
				14th Street Southwest	I-315 exit 0
		221.770	356.904	I‑15 / US 89 north / MT 200 west – Helena, Shelby	North end of I-315 / I-15 Bus. / US 89 / MT 200 overlap; I-15 exit 278
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

References

Route map: Bing