The Danyang–Kunshan Grand Bridge in the Jiangsu Province in PRC is the longest bridge with 164,800 m in length and 80 m in span. It was completed in the year 2010 and was open to public in 2011. As of June 2011, it holds a Guinness World Record for the longest bridge in any category. The next longest bridge is Tianjin Grand Bridge which is 113,700 m in length. It is a part of Beijing - Shanghai High Speed Railway.
As a matter of fact, the first 5 and the last 3 of the 10 longest bridges are in People's Republic of China. The Lake Pontchartrain Causeway and Manchac Swamp Bridge, both in USA, are 38,442 and 36,710 meters in length respectively.