AMP: 0 Location: S-300 and US-12, Golden Valley Cty Reassurance shield as Secondary 300 begins and we head out of Ryegate. AMP: 5 Location: S-300 and Shifley Rd, Golden Valley Cty Five miles south of Ryegate, pavement ends. AMP: 5 Location: S-300 and Shifley Rd, Golden Valley Cty No reassurance shield as pavement ends and county maintenance begins. … Continue reading Montana Secondary Highway 300, US-12/MT-3/S-238 to Meins Rd