Five major infrastructure projects — two new tunnels crossing the Huangpu River, two elevated roads and an underground space which will become a Metro station, got under way on Wednesday.

Once completed, they will largely improve the traffic conditions alongside the river.

One of the tunnels will connect Xuhui District and the Pudong New Area. It will starts from Longshui Road S. in Xuhui. After crossing the river, it will divide into two, one going north for 1,781 meters to the junction of Yaolong and Haiyang roads. The other stretching 2,331 meters south to the junction of Yaolong and Gaoqing roads.