AMP: 0 Location: Tie Creek Rd and S-323, Carter Cty No reassurance shield as the route begins. The brown sign suggests that this used to be a forest service road. Anyway, it’s a 19 mile gravel spur to South Dakota. Believe it or not, this is the beginning of a multi state highway that continues as … Continue reading Montana Secondary Highway 328, S-323 to SD-20/SD State Line