On October 7, 2010, the world's first "man" arc-shaped steel bridge was officially opened - the Nanjing Long River Three Bridge, located about 19 kilometers above the Nanjing Long River Three Bridge, the length of the Nanjing Long River Three Bridge is about 15.6 kilometers, the length of the Nanjing Long River Three Bridge is about 4744 meters, the main bridge is 648 meters. The construction of the bridge has achieved a true passage through the Hangzhou Third Bridge, which runs from east to southwest, according to the Nanjing Long River Three Bridge's deep water base has been designed so far as the Long River Three Bridge is the deepest and the most difficult underwater base project. The construction project has been successfully investigated, the construction of the bridge has been achieved at