State Route 161 (SR 161) is part of Maine's system of numbered state highways. It runs 86 miles (138 km) from Fort Fairfield to Allagash. It begins at the Fort Fairfield - Andover Border Crossing along the Canada–US border to Dickey Road near the confluence of the Allagash and Saint John rivers. SR 161 runs through the communities of Fort Fairfield, Caribou, Woodland, New Sweden, Stockholm, New Canada, Fort Kent, St. John, St. Francis, and Allagash.