What is the worlds longest rood tunnel?
The world’s longest road tunnel is the 10.14-mile (16-kilometer) long, two-lane St. Gotthard road tunnel from Goschenen to Airolo, Switzerland. It opened to traffic on September 5, 1980. The longest road tunnel in the United States is the 1.69-mile (2.7-kilometer) long twin Eisenhower Memorial Tunnel on Interstate 70. It runs beneath the Continental Divide in Colorado. (The Continental Divide is a continuous ridge of peaks in the Rocky Mountains that marks the boundary between eastward flowing waters and westward flowing waters in North America.) Source: The Guinness Book of Records 1996, p. 103.