But most of the world's longest bridges are in China. The Jiaozhou Bay Bridge, for example, spans 16.6 miles and connects the eastern city of Qingdao to the island of Huangdao.
Two parallel bridges crossing Louisiana's brackish estuary make up the Lake Pontchartrain Causeway. The longer of the two bridges is 23.8 miles.
The 70.6-mile-long Tianjin Grand Bridge is part of the Beijing–Shanghai high-speed railway in China. It runs between Langfang and Qingxian.
Extending 102.4 miles, China's Danyang-Kunshan Grand Bridge claims the title of the world's longest bridge. The construction process employed 10,000 workers, lasted four years, cost about $8.5 billion, and ended in 2010.