AMP: 40 Location: US-87 and MT-80, Chouteau Cty Reassurance shield missing the shield after the Montana 80 junction. AMP: 39 Location: US-87 and S-386, Chouteau Cty A mile later, turn left for S-386, which spurs back up to Fort Benton.  S to S-564, N to S-387  N to MT-80  S to S-387  N to S-564