The third Bridge is the world's first double-deck traffic prestressed cable-stayed bridge, the upper layer is two-way 6 lanes, the lower layer is two-way 4 lanes in the near future, and the long-term is two-line light rail. The main span of the main bridge is 180m harp-type thin cable cable-stayed bridge,"m" shaped main tower, and the approach bridge is 60m high prestressed concrete box girder.