I-15/90 East - Butte


Unsigned from I-15/90, Browns Gulch Road north from Exit 122 is Montana Secondary Highway 276. S-276 heads 7.85 miles north to Telegraph Gulch Road in Browns Gulch.
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Three exits connect I-15 north and I-90 east with the urban area of Butte over the course of 3.5 miles.
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Interstate 115 doubles as Business Loop I-15/90, which follows Montana Street north from Iron Street to Park Street and the Butte city center.
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Montana Street extends 0.75 miles south from Business Loop I-15/90 at Iron Street to a split diamond interchange (Exit 126) with I-15/90 at Desmet and La Salle Streets.
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Curving southeast toward Exit 126 for Montana Street, I-15/90 parallel Silver Bow Creek and a BNSF Railroad line.
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Reese Canyon and Brookside Canyon appear along the mountain range on the east side of Butte.
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Big Butte and Immaculate Conception Catholic Church appear to the north from I-15/90 at Montana Street.
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Business Loop I-15/90 return to I-15/90 south along Harrison Avenue. Unmarked at Exit 127 is Montana Highway 2, which heads south along a commercial strip from Exit 127 A.
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MT 2 follows Old U.S. 10 south from Exit 127 A to Bert Mooney Airport (BTM) and Nine Mile. The state highway meets Interstate 90 east again at Exit 256 and Cardwell.
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Exit 127 B ties into Harrison Avenue next to Sampson Street. Business Loop I-15/90 lines Harrison Avenue 1.69 miles north onto Front Street ahead of Downtown Butte.
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Photo Credits:
- Alex Nitzman: 07/05/16, 07/07/16
Page Updated Thursday January 29, 2026.


