AMP: 0 Location: Yellowstone Ave and Boundary St, West Yellowstone As we leave Jellystone, we’ll be welcomed to Montana and the city of West Yellowstone AMP: 0 Location: Yellowstone Ave and Canyon St, West Yellowstone Two blocks later, turn right for 191/287 north and US 20 west. AMP: 0 Location: Canyon St and Firehole Ave, West Yellowstone … Continue reading U.S. Route 191, Yellowstone National Park (TO US-14/US-16/US-20/US-89/US-212/US-287) to US-20