The Shanghai–Changzhou Expressway (Chinese: 上海–常州高速公路), commonly referred to as the Huchang Expressway (Chinese: 沪常高速公路), is a partially completed 170.7-kilometre-long Chinese expressway (106.1 mi) that connects the cities of Shanghai and Changzhou. In Shanghai, it is designated S26, and in Jiangsu, it is designated S58. It connects the cities of Shanghai, Suzhou, Wuxi, and Changzhou and serves as an important expressway between the province of Jiangsu and the direct-controlled municipality of Shanghai.
The Shanghai portion of the expressway will be 25.7 km (16.0 mi) in length, of which 18.4 km (11.4 mi) has already been completed. The Jiangsu portion will be 145 km (90 mi) in length, of which 75 km (47 mi) has been completed. The expressway is currently complete between the cities of Shanghai and Suzhou.