AMP: 50 Location: MT-16 and MT-23, Richland Cty Reassurance shield after the 23 junction as 200 joins 16. AMP: 51 Location: MT-16 and CR 123, Richland Cty Turn left or right for CR 123. AMP: 51 Location: Central Ave and 14th St, Sidney Welcome to Sidney! Sidney is the major city in Montana’s portion of the Bakken. AMP: 51 … Continue reading Montana Highway 16, MT-23/MT-200 to MT-200