AMP: 128
Location: I-90 and Harrison Ave, Butte
Just after the business loops rejoin, I-15 and I-90 will prepare to split.
AMP: 128
Location: I-15 and Harrison Ave, Butte
Reassurance shield after Harrison Avenue.
AMP: 129
Location: I-15 and I-90, Butte
At the exit, keep right for I-15 north and stay straight for I-90 east.
AMP: 129
Location: I-15 and I-90, Butte
Exit for I-15 north to Helena, Great Falls, and Canada. Stay on I-90 for Billings, Chicago, and Boston.
AMP: 129
Location: I-15 and I-90, Butte
Exit for I-15 north.
E to MT-55/S-399, W to I-115/I-15 Bus/I-90 Bus
S to I-115/I-15 Bus/I-90 Bus, N to MT-69
S to I-15 Bus/I-90 Bus/MT-2, N to MT-69
