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The Donghai Bridge is the second longest cross-sea bridge and the 6th longest bridge in the world.

The bridge was the longest cross-sea bridge in the world for a few years until  Hangzhou Bay Bridge was opened on May 1st, 2008.

The Donghai Bridge (simplified Chinese: 东海大桥; traditional Chinese: 東海大橋; pinyin: Dōnghǎi Dàqiáo; literally “East Sea Grand Bridge”) was completed on December 10th, 2005 and has a total length of 20.19 miles it connects Yangshan deep-water port and Shanghai in China. 

The majority of the bridge is low-level viaduct but there are also cable-stayed sections to allow large ships passage. 

 

Not sure how much steel was used in the construction of this bridge, but as always if I get these figures I will post them or if you have them feel free to comment so everyone can know.