AMP: 7 Location: US 89 and MT-200, Cascade Cty Reassurance shield as the two routes join. 89 is erroneously signed as eastbound. AMP: 7 Location: US 89 and MT-200, Cascade Cty 8 miles to junction I-15. AMP: 0 Location: US 89 and 4th St, Vaughn, Cascade Cty Before we approach I-15, we’ll enter unincorporated Vaughn. … Continue reading U.S. Route 89, MT-200 to I-15