AMP: 77 Location: US-287 and S-359, Madison Cty No reassurance shield after the 359 junction AMP: 75 Location: US-287 and Pony Rd, Harrison, Madison Cty A couple miles later, we’ll approach Harrison. AMP: 75 Location: US-287 and Pony Rd, Harrison, Madison Cty Turn right for unsigned S-283 towards Pony  S to MT-84, N to MT-2  W to Pony … Continue reading U.S. Route 287, S-359 to S-283