AMP: N/A (0) Location: MT-64 and US-191, Gallatin Cty Reassurance shield as 64 begins. 64 isn’t actually a state highway, somehow, so it doesn’t have mileposts. AMP: N/A (10) Location: Lone Mountain Trl and Beehive Basin Rd, Big Sky, Madison Cty And isn’t very well signed either. 10 miles later, we’ll come to the unceremonious … Continue reading Montana Highway 64, US-191 to Big Sky