COUNTY          COUNTY SEAT		VISITED         INTERSTATES             US HIGHWAYS
Beaverhead 	Dillon			   1988		15			none
Big Horn	Hardin			   1993		90			87 212
Blaine		Chinook			not yet		none			2
Broadwater	Townsend		   1988		90			12 287
Carbon		Red Lodge		   1988		none			212 310
Carter		Ekalaka			not yet		none			212
Cascade		Great Falls		not yet		15 315			87 89
Chouteau	Fort Benton		not yet		none			87
Custer		Miles City		   1988		94			12
Daniels		Scobey			not yet		none			none
Dawson		Glendive		   1988		94			none
Deer Lodge	Anaconda		   1993		90			none
Fallon		Baker			not yet		none			12
Fergus		Lewistown		not yet		none			87 191
Flathead	Kalispell		not yet		none			2 89 93
Gallatin	Bozeman			   1988		90			20 191 287
Garfield	Jordan			not yet		none			none
Glacier		Cut Bank		not yet		none			2 89
Golden Valley	Ryegate			not yet		none			12
Granite		Philipsburg		   1993		90			12
Hill		Havre			not yet		none			2 87
Jefferson	Boulder			   1988		15 90			12 287
Judith Basin	Stanford		not yet		none			87
Lake		Polson			not yet		none			93
Lewis and Clark	HELENA			not yet		15			12 287
Liberty		Chester			not yet		none			2
Lincoln		Libby			not yet		none			2 93
Madison		Virginia City		   1988		15			287
McCone		Circle			not yet		none			none
Meagher		White Sulphur Sprs.	not yet		none			89
Mineral		Superior		   1993		90			none
Missoula	Missoula		   1993		90			12 93
Musselshell	Roundup			not yet		none			12 87
Park		Livingston		   1988		90			89 191 212
Petroleum	Winnett			not yet		none			87
Phillips	Malta			not yet		none			2 191
Pondera		Conrad			not yet		15			89
Powder River	Broadus			not yet		none			212
Powell		Deer Lodge		   1993		90			12
Prairie		Terry			   1988		94			none
Ravalli		Hamilton		not yet		none			93
Richland	Sidney			not yet		none			none
Roosevelt	Wolf Point		not yet		none			2
Rosebud		Forsyth			   1988		94			12 212
Sanders		Thompson Falls		not yet		none			none
Sheridan	Plentywood		not yet		none			none
Silver Bow	Butte			   1988		15 90 115		none
Stillwater	Columbus		   1988		90			none
Sweet Grass	Big Timber		   1988		90			191
Teton		Choteau			not yet		15			89 287
Toole		Shelby			not yet		15			2
Treasure	Hysham			   1988		94			none
Valley		Glasgow			not yet		none			2
Wheatland	Harlowton		not yet		none			191
Wibaux		Wibaux			   1988		94			none
Yellowstone	Billings		   1988		90 94			87 212
TOTAL: (23/56, 50.0%)					15 90 94 115 315	2 12 20 87 89 93
										191 212 287 310

• I-90: from Idaho state line near Saltese to Wyoming state line near Aberdeen (552 miles)
• I-94: from western terminus at I-90 exit 456 near Billings to North Dakota state line near Wibaux (249 miles)
• I-115: from southern terminus at I-15/90 exit 126 near Butte to northern terminus at BUS I-15 in Butte (1 mile)

• I-15: from Idaho state line near Monida to exit 129 (I-90) near Butte (129 out of 396 miles)
• I-315: (0 out of 1 mile)
• US 2: (0 out of 666 miles)
• US 12: from I-90 exit 105 in Missoula to I-90 exit 175 in Garrison, and from I-94 exit 93 in Forsyth to I-94 exit 141 near Miles City (118 out of 597 miles)
• US 20: (0 out of 10 miles)
• US 87: from Wyoming state line near Aberdeen to I-90 exit 452 in Billings (100 out of 440 miles)
• US 89: from I-90 exit 332 in Livingston to I-90 exit 340 near Livingston (8 out of 404 miles)
• US 93: from I-90 exit 96 near Missoula to Reserve Street in Missoula (5 out of 286 miles)
• US 191: from I-90 exit 306 in Bozeman to I-90 exit 367 in Big Timber (61 out of 440 miles)
• US 212: from I-90 exit 434 in Laurel to I-90 exit 510 at Crow Agency (76 out of 322 miles)
• US 287: (0 out of 282 miles)
• US 310: (0 out of 55 miles)

• MT-2: from I-90 exit 127 in Butte to Fat Jack Road in Butte
• MT-3: from I-90 exit 450 in Billings to State Avenue in Billings
• MT-59: from BUS I-94 at Center Avenue in Miles City to BUS I-94 at 7th Street in Miles City
• MT-200: from I-90 exit 96 near Missoula to I-90 exit 109 near Milltown