On December 7, 2020, the Zhanggao River Crossing Channel was located 28 kilometers downstream of Jiangyin Bridge, 57 kilometers upstream of Sutong Bridge, and 16 kilometers upstream of Hutong Bridge under construction. According to the current engineering feasibility study, it is proposed to adopt the standard design of two-way eight-lane expressway. The line starts from the Shugang Expressway on the east side of Chenyang Town, Zhangjiagang, and enters the Yangtze River at the upper reaches of Zhanggao Automobile Ferry to the north, crosses Liuhaisha Waterway, passes through Jingjiang Mazhou Island, and crosses Rugao Middle Branch Fujiangsha North Waterway, at Rugao The Huatai heavy factory landed and extended to the northwest, ending in the Shanghai-Shaanxi Expressway with a total length of about 28km.

The construction of the Jiangnan Zhangjiagang construction site was constructed by CCCC Second Navigation Engineering Bureau Co., Ltd., and the winning price was 33.28 million yuan. Construction of Mazhou Island (Main River Channel Bridge). The construction of China Railway Bridge Bureau Group Co., Ltd. won the bid price of 29.37 million yuan. The construction site of Mazhou Island (Zhongdian Channel Bridge) was built by China Communications Second Highway Engineering Co., Ltd. The winning price was 28.41 million yuan. Construction of the construction site on the side of Rugao, Jiangbei. China Communications Road and Bridge Construction Co., Ltd. The winning bid price was 19.58 million yuan.

The Zhanggao Passage is one of the eight river-crossing passages included in the upper-level planning of Nantong City. The design speed of the crossing section is 100km/h, and the design speed of the connection section is 120km/h. There are 4 interchanges in the whole project. The total investment is 254,533,300 yuan. It is expected to start construction in December 2021, and open to traffic in December 2026. The construction period is about 5 years. Editor/Xing Wentao