AMP: 0 Location: Canyon St and Firehole Ave, West Yellowstone Reassurance shield after the US 20 junction AMP: 1 Location: US 191 and NF-1747, Gallatin Cty Reassurance shield as we head out of West Yellowstone AMP: 8 Location: US 191 and US 287, Gallatin Cty A few miles later, 287 will split. Follow 287 to Virginia City and … Continue reading U.S. Route 191, US-20 to US-287