AMP: 121 Location: I-15 and I-90, Silver Bow Cty Just after the freeways merge, we’ll approach the truck stop community of Rocker AMP: 121 Location: I-15 and I-90, Silver Bow Cty Reassurance shield as the freeways merge. AMP: 122 Location: I-90 and Rocker Rd, Rocker, Silver Bow Cty Exit for Rocker and unmarked S-276. 276 heads up to … Continue reading Interstate 90, I-15 to S-276