AMP: 13 Location: SH-29 and S-324, Lemhi Cty Welcome to Idaho! Secondary 324 turns into Idaho 29 at the top of Bannock Summit but retains its gravellyness AMP: 13 Location: SH-29 and S-324, Lemhi Cty Reassurance shield as 29 begins. Idaho signs unpaved state highways well, unlike most states. AMP: 9 Location: SH-29 and nothing, … Continue reading Idaho State Highway 29, MT S-324/MT State Line to SH-28