Interstate 81 is an Interstate Highway in the eastern part of the United States. Its southern terminus is at Interstate 40 in Dandridge, Tennessee; its northern terminus is on Wellesley Island at the Canadian border, where the Thousand Islands Bridge connects it to Highway 401, the main Ontario freeway connecting Detroit via Toronto to Montreal. I-81 is the third longest Interstate highway whose number does not end with a 0 or 5 after I-94 and I-64. Interstate 81 largely traces the paths created down the length of the Appalachian Mountains by migrating animals, American Indians, and early settlers. It also follows a major corridor for troop movements during the Civil War. These trails and roadways gradually evolved into U.S. Route 11. Interstate 81 parallels much of the older Route 11. Being mostly rural, it is heavily used as a trucking corridor, often as a bypass of the busier Interstate 95 to the east. The Interstate 81 Corridor Coalition, a six-state coalition, was organized to handle issues along Interstate 81, such as truck traffic and air pollution. As of October 15, 2008, this commission has met twice. Wikipedia [ - ]

Interstate 81 is an Interstate Highway in the eastern part of the United States. Its southern... [ + ]