The superstructure of this bridge is a prestressed concrete cantilever structure in the form of box girders of three cells. The girders near the piers are 6.25 meters in depth, but only 1.8 meters near the hinged connection at the center. There are a total of six spans. Four spans are 75 meters, 150 meters, 118 meters and 43 meters in length, and two spans are each 142.5 meters long.
主橋上部結構之箱樑有三個格間，靠近橋墩之樑深為 6.25 公尺，而在中點鉸接處僅為 1.8 公尺，跨徑計有 75 公尺、150 公尺、118 公尺、43 公尺各一孔，142.5。