AMP: 49 Location: MT 200 and Blue Slide Rd, Sanders Cty Reassurance shield as we head out of Thompson Falls AMP: 49 Location: MT 200 and S-471, Sanders Cty Stay straight for MT 200. Turn left for 471, which heads to the Idaho line in the middle of the national forest and turns into a forest service … Continue reading Montana Highway 200, S-472 to S-471