Why doesn't Shanghai North-South Elevated Road pass through Chengdu South Road and turn to Chongqing North Road?

First of all, because Chengdu Road and Chongqing Road are two roads, the intersection of Chongqing Road and Huaihai Road is a T-junction. It was originally a state-owned thrift store on Huaihai Road, which is familiar to Shanghainese. The older generation of locals also called it a five-star shopping mall, and Chengdu Road South Road is also a T-junction on Huaihai Road.

Secondly, there are several old-fashioned concession apartment buildings between Chengdu South Road and Chongqing Road, among which the most famous women's product building is Peiwen Apartment, with a maximum of 9 floors, which is at least 60 meters high according to the height of old-fashioned apartment buildings. If the viaduct is directly built in this way, the old building will be demolished or elevated, and the pile foundation will fall within the scope of these old apartment buildings and important shops on Huaihai Road, and the cost will inevitably be high, and the safety and aesthetics will also disappear.