Last Driven August 2020 (Historic Photo: October 2015) AMP: 644 Location: 6th St E and 1st Ave E, Culbertson A block after 16 joins 2, it will split. Follow 2 east to Williston, N.D. Turn left for Montana 16 north to Plentywood and Regina, Sask. AMP: 644 Location: 6th St E and 1st Ave E, Culbertson Turn … Continue reading U.S. Route 2, MT-16 to MT-16