Where is the longest bridge?

The longest bridge in the United States—and the world, for that matter—consists of two parallel bridges called the Lake Pontchartrain Causeway, near New Orleans, Louisiana. The Causeway runs over water, is 23.87 miles (38.42 kilometers) long, and is supported by more than 9,000 concrete pilings. The south end of the Causeway is in Metairie, Louisiana, a suburb of New Orleans, and the north end is in Mandeville, Louisiana. New York City houses the Verrazano-Narrows Bridge, the longest suspension bridge (a type of bridge where the main load-bearing elements are hung from suspension cables) in the United States. Its total length is 4,260 feet (1,298 meters). The ends of the bridge are at historic Fort Hamilton in Brooklyn and Fort Wadsworth in Staten Island, both of which guarded New York Harbor at the Narrows for over a century. The bridge was named after Giovanni da Verrazano, who, in 1524, was the first European explorer to sail into New York Harbor. Next in line is San Francisco’s Golden Gate Bridge, which is 4,200 feet (1,219 meters) long. The third longest suspension bridge in the United States is Michigan’s Mackinac Straits suspension bridge, which connects the upper and lower peninsulas of the state. Nicknamed “Big Mac,” the bridge spans 3,800 feet (1,158 meters).Other cities around the world with long suspension bridges include Japan, Denmark, China, and England: The Akashi Kaikyo Bridge, for example, also known in Japan as the Pearl Bridge, is the longest suspension bridge in the world with a main span of 6,532 feet (1,991 meters). By comparison, the bridge is almost one-quarter mile longer than the previous record holder, the East Bridge (StoreBaelt) in Denmark, which opened the same year, in 1998.

The historic Brooklyn Bridge in New York was completed in 1883 and is still heavily used by traffic today.