Highway
Major highways are often named and numbered by the governments that typically develop and maintain them. Australia's Highway 1 is the longest national highway in the world at over and runs almost the entire way around the continent. China has the world's largest network of highways followed closely by the United States of America. Some highways, like the Pan-American Highway or the European routes, span multiple countries. Some major highway routes include ferry services, such as U.S. Route 10, which crosses Lake Michigan.
Interstate 287
In 2008, a private firm, Polimeni Associates, proposed to construct a more than tunnel across Long Island Sound between Rye and Oyster Bay. This proposed tunnel would be the longest highway tunnel in the world, with its length exceeding that of the Lærdal Tunnel in Norway by a mile. It would start at the junction with the Cross Westchester Expressway and the New England Thruway in Rye and end at NY 135 and NY 25 in Syosset. Estimated to cost approximately $10 billion, it would feature three tubes: the outer tubes would have three lanes of vehicular traffic each and the inner tube would be used for maintenance. The proposed tunnel, which is to be operated by a private firm, is still awaiting approval to begin construction.