The construction contract including design and construction of the works was awarded to the Joint Venture consisting of the Company together with three other local companies. It is a 8-lane road link tunnel under Huangpu River, linking “Wusong” at Puxi with “Sanchagang” at Pudong. The tunnel, including both the end cut and cover sections with the central immersed tunnel, is 1,370m long.

There are seven immersed tunnel elements forming the 736m tunnel, each element being 43m wide, 9.55m high and of variable length from 100m to 108m. The heaviest element weighing approximately 43,000 tons makes this the largest immersed tunnel in Asia.