AMP: 0 Location: S-474 and S-263, Missoula Cty Reassurance shield as 474 begins. 474 is a former alignment of US 10 between Missoula and Frenchtown. AMP: 3 Location: Hwy 10 and Hwy 93, Missoula Cty A few miles later, stay straight for US 93. AMP: 3 Location: Hwy 10 and Hwy 93, Missoula Cty As … Continue reading Montana Secondary Highway 474, S-263 to I-90/US-93/MT-200