The ShanghaiâÂÂXi'an Expressway (), designated as G40 and commonly referred to as the Hushaan Expressway () is an expressway that connects the cities of Shanghai and Xi'an, Shaanxi. It is in length.
The expressway was completed after Chongqi Bridge opened to commercial traffic on December 24, 2011.
The expressway uses the Shanghai Yangtze River Tunnel and Bridge and the Chongqi Bridge, to cross the Yangtze River north of Shanghai.
Wuzhuang toll station in Chuzhou is Asia's largest toll plaza, having 12 + 24 toll lanes. It is located along G40 as one of the important east-west passages from the western direction to Jiangsu, Zhejiang and Shanghai. It is also located close to Nanjing, an important transport node in Jiangsu. During the post-Spring Festival rush of 2025, the station reported a maximum of 126,000 daily through passes.
The expressway passes through the following cities: