Introduction to the bridge: Heishipu Bridge, also known as the Fifth Xiangjiang Bridge, is the largest bridge across the Xiangjiang River in the southern section of the Changsha City Ring Line. The total length of this bridge is 3,068 meters. The main bridge is a three-span steel tube arch and 11 consecutive arches. The bridge deck is 34 meters wide and has six lanes in both directions. Compared with the existing bridges across the Xiangjiang River, it has the highest length, width and speed. It can be called the "No. 1 Bridge on the Xiangjiang River". Its scale is the largest in the country among bridges of the same type.