AMP: 0 Location: S-432 and Railroad St, Chouteau Cty Reassurance shield as S-432 begins and we head out of Big Sandy. AMP: 17 Location: S-432 and  Rudyard Rd, Chouteau Cty Seventeen miles later, pavement ends as S-432 turns to head north. AMP: 17 Location: S-432 and Rudyard Rd, Chouteau Cty Pavement ends as maintenance goes to Chouteau County. … Continue reading Montana Secondary Highway 432, US-87/S-236 to US-2