AMP: 83 Location: US-287 and MT-2, Jefferson Cty Reassurance shield after the Montana 2 split. AMP: 77 Location: US-287 and S-359, Madison Cty A few miles later, we’ll approach S-359. AMP: 77 Location: US-287 and S-359, Madison Cty Turn right for S-359 north, which heads back up to I-90 near Whitehall.  S to S-359, N to I-90  N to … Continue reading U.S. Route 287, MT-2 to S-359