This is the moment workers connected the two sides of the world's longest sea bridge - seven years after building first began. The last steel box girder was installed for the crossing on Wednesday, which spans the estuary of the Pearl River connecting Hong Kong and China. The project, called Hong Kong-Zhuhai-Macao Bridge is 14 miles long and also includes an underwater tunnel. Construction of the Y-shaped bridge began in 2009 at a cost of 100 billion yuan ($15billion). And when the bridge opens to traffic, it will shorten the distance between Hong Kong, Zhuhau and Macao. It will officially...