AMP: 2 Location: US 87 and Old Havre Hwy, Great Falls A block later, turn right to get to I-15 and 89 north/200 west following Great Falls’ locally maintained NW Bypass AMP: 2 Location: US-87 and Old Havre Hwy, Great Falls Or stay straight for 87 south/15th Street AMP: 2 Location: 15th St and Old … Continue reading U.S. Route 87, S-225 to US-89/MT-3/MT-200