Client: Jiangsu Provincial Transportation Engineering Construction Bureau

Location: Zhangjiagang, Jingjiang, Rugao, China

Work Period: 2021 – Present

Service to Client: Feasibility Study, Investigation, Design

Spanning across Zhangjiagang (Suzhou), Jingjiang (Taizhou), and Rugao (Nantong) in Jiangsu Province, the Zhangjingao Yangtze River Bridge is currently under construction. Its river-crossing section stretches approximately 7.9 kilometers, comprising two main navigation channel bridges (southern and northern) and three approach bridge segments (southern, central, northern). Designed as a dual eight-lane structure, the project features twin large-span steel box girder suspension bridges: the 2,300-meter main span Main Channel Bridge and the 1,208-meter main span Middle Channel Bridge.

     The Main Channel Bridge sets multiple technical benchmarks, including its world-record 2,300-meter suspension span and 350-meter-tall pylons, the highest of their type globally. The southern anchor block, measuring 110 meters in length, 75 meters in width, and 83 meters in height, represents the world’s largest diaphragm wall anchorage foundation, covering an area equivalent to 20 standard basketball courts.

     Further innovations include the world’s longest high-strength main cable (4,400 meters, 2,200 MPa tensile strength), the longest continuous steel box girder (3,017 meters), and the largest expansion joint displacement capacity (3,120 millimeters). The bridge’s main span ranking positions it as the 4th longest suspension bridge span constructed during the 20th century.