AMP: 256 Location: I-90 and S-359, Jefferson Cty Reassurance shield after the 359 and 2 junction. AMP: 256 Location: I-90 and S-359, Jefferson Cty 18  miles to junction US 287 AMP: 267 Location: I-90 and Milligan Canyon Rd, Jefferson Cty Reassurance shield a few miles later. AMP: 267 Location: I-90 and Milligan Canyon Rd, Jefferson … Continue reading Interstate 90, MT-2/S-359 to US-287