AMP: 34 Location: S-409 and S-217, Liberty Cty After the turn, we’re six miles from the Canadian border. AMP: 41 Location: S-409 and AB-880, Liberty Cty Six miles later, we’ll approach the Port of Whitlash, where CBP has built a hilariously large customs facility. The orad continues into Alberta as unpaved Alta. 880, which heads north towards … Continue reading Montana Secondary Highway 409, S-217 to AB-880/AB Int’l Boundary