AMP: 94 Location: 10th Ave S and 6th St S, Great Falls Reassurance shield after the business loop splits. Stay straight to access US-87. AMP: 93 Location: 10th Ave S and 15th St S, Great Falls A few blocks later, we’ll approach US-87. AMP: 93 Location: 10th Ave S and 15th St S, Great Falls Turn left for … Continue reading U.S. Route 89, I-15 Bus to US-87