AMP: 530 Location: I-90 and S-463, Big Horn Cty Reassurance shield after the 463 junction. AMP: 543 Location: I-90 and Wyola Rd, Big Horn Cty A few miles later, we’ll approach Wyola Rd/S-457 AMP: 544 Location: I-90 and Wyola Rd, Big Horn Cty Exit for Wyola Rd/S-457, another quick connector over to 451. S to … Continue reading U.S. Route 87, S-463 to S-457