AMP: 0 Location: Pan American Ave and 5th St, Douglas No signage for US-191 as we cross into the United States. The route begins here and heads all the way to Saskatchewan AMP: 0 Location: Pan American Ave and  G Ave, Douglas 11 blocks later, we’ll approach SR 80. Stay straight for Pan American and … Continue reading U.S. Route 191, SON Int’l Boundary to SR 80