AMP: 12 Location: Coalridge Hwy and Dagmar N Rd, Sheridan Cty Reassurance shield as S-517 begins. AMP: 5 Location: Coalridge Hwy and Antelope Ck Rd, Sheridan Cty Reassurance shield about halfway along S-517. AMP: 0 Location: Coalridge Hwy and MT-16, Sheridan Cty A few miles later, we’ll approach MT-16. AMP: 0 Location: Coalridge Hwy and MT-16, Sheridan Cty … Continue reading Montana Secondary Highway 517, S-516 to MT-16