Shanghai–Nanjing Expressway

The Shanghai–Nanjing Expressway is the main expressway between the Chinese cities of Shanghai and Nanjing. It is also the busiest expressway in China. The expressway began construction on June 14, 1992, was completed in February 1996, and opened to traffic November 28, 1996. That year, it was listed as a key national construction project.

As the first highway in Jiangsu province, the Shanghai–Nanjing Expressway has up-to-date charge, monitoring, communications, lighting, safety and service facilities. It has improved transportation in Jiangsu and Shanghai, and encourages development along its length. It was the first expressway in China to use remote traffic monitoring.

Properties
The expressway is a modern, enclosed, four-lane, two-way highway. Each lane is 3.75 m wide, and the highway's roadbed is 26 m wide. There is a 3 m dividing strip in the center of the highway and a 2.5 m emergency parking area on each side of the highway. The speed limit is 120 km/h. It is 274 km in length. It runs from Zhenru, Shanghai to Maqun, Nanjing via Anting, Kunshan, Suzhou, Shuofang (硕放街道), Wuxi, Changzhou, Danyang, Zhenjiang and Jurong. The Shanghai section is 25.87 km in length, and the Jiangsu section is 248.21 km long. The Zhenjiang section (a branch highway) is 10.25 km long. In Shanghai, the highway is coterminous with G2 Beijing–Shanghai Expressway and G42 Shanghai–Chengdu Expressway.