AMP: 136 Location: Main St and Nucleus Ave, Columbia Falls No reassurance shield after the 486 junction. AMP: 138 Location: US-2 and S-206, Flathead Cty A few miles later, we’ll approach Secondary 206. AMP: 138 Location: US-2 and S-206, Flathead Cty 206 is a fairly important secondary, serving as a westerly bypass of Kalispell for … Continue reading U.S. Route 2, S-486 to S-206