AMP: 15 Location: Augusta Rd and Flat Creek Rd, Lewis & Clark Cty No reassurance shield as 435 begins. AMP: 9 Location: Augusta Rd and Chisolm Barret Rd, Lewis & Clark Cty A few miles later, pavement begins as we head up towards Augusta. AMP: 0 Location: Main St and Eberl St, Augusta A few miles later, we’ll … Continue reading Montana Secondary Highway 435, Flat Creek Rd to US-287