How many kilometers is the total length of Dalian sea-crossing bridge?

According to Elvin's inquiry. Dalian Xinghai Bay Bridge is a sea-crossing bridge on Binhai Avenue in the south of Dalian, and it is the first sea-anchored suspended cable-crossing bridge in China. The sea-crossing bridge of Binhai Avenue in southern Dalian is 6 kilometers long, with a main bridge of 820 meters, of which the main bridge spans 460 meters and both sides span 180 meters. The whole bridge adopts "unit multi-directional displacement expansion device", and the Xinghai Bay Bridge was officially opened to traffic on 20 15, 10/0/October 30. It is the longest sea-crossing bridge project in Northeast China and the first sea-anchored suspended cable-crossing bridge in China.