Map
Hangzhou Bay is a gulf in the East China Sea. For the Zhejiang province this is a first class project as both ends of the Hangzhou Bay Bridge are in the province´s cities of Cixi and Zhapu. The bridge is the main project of the 5.200 kilometres national highway between Heilongjiang Province in the north toi the Hainan Province in the south.

Qiantang River Tide
Hangzhou Bay is known both in China and internationally for it´s fantastic tides, a natural wonder that is a major tourist attraction. . The tides are moving in a speed that can reach 30 kilometres (19 miles), sounds like thunder and the waves can be up to 8 meters (25 feet) high. One reason for the study of the project for a decade is the tide which will make the construction process complicated.