Consisting of 5 bridges which include Cen'gang Bridge, Xiangjiaomen Bridge, Taoyaomen Bridge, Xihoumen Bridge, Jintang Bridge and their continuation roads, the Zhoushan Cross-sea Bridge, China's largest island-mainland connection project, starts from the island of Zhoushan and finishes at Zhenhai District of Ningbo, traversing through 4 isles of Lidiao, Fuchi, Cezi, Jintang, and crossing over 6 water channels and Huibie sea area. Designed and built following expressway standards, the bridges have dual four-lane roads which are 50 kilometers long in total, gross investment about 12 billion yuan.
The first-stage construction of Zhoushan Cross-sea Bridge, consisting of Cen'gang Bridge, Xiangjiaomen Bridge, Taoyaomen Bridge, was started on Sep 26, 1999, and opened to public on January 1, 2006, gross investment 1.8 billion yuan.
In February, 2005, projects of Xihoumen Bridge and Jintang Bridge got approval from National Development and Reform Committee. As the second-stage construction and major section of Zhoushan Cross-sea Bridge, total gross investment of these two bridges exceeds 10 billion yuan.
In the afternoon of December 25, 2009, opening ceremony of Zhoushan Cross-sea Bridge was held in Jintang island. At 23:58 that night, the bridge formally opened to public.
Regarded as a milestone in Zhoushan's history, Zhoushan Cross-sea Bridge has turned some major islands in Zhoushan from isolated sea-islands to the peninsula connected with mainland. Supported by relatively complete infrastructures in China's wide hinterland, Zhoushan's economy with island characteristic will be developed better, so do its coastlines and deep ports which are the best in China. It is profoundly meaningful for further development of Zhoushan's ocean resources, as well as economic development of Zhejiang Province and Changjiang Delta Zone at large.