1, Sanjiaojiang Bridge is located in China's famous "East Sea fishing field" Shengshan Island and "Mussel Town" Gouqi Island, is a three-tower double cable-stayed bridge connecting the two islands. 2. On January 6, 2010, the Sanjiaojiang Cross-sea Bridge in Shengsi County was opened to traffic, and it took 3 years and 9 months to open the bridge. It is the largest investment in the history of traffic construction in Shengsi County, the most difficult construction, and the longest construction cycle. From now on, the traffic situation between Shengshan Gouqi Island can only be ferryed by ferry will forever become history, and can only be stored in the history volume of Shengshan Town and Gouqi Township development. 3. The Sanjiaojiang Bridge Bridge is 781 meters long, of which the main bridge is 685 meters long, the main bridge is 12 meters wide, the bridge is 9 meters wide, and the net height is 14.2 meters. 4. Since the Sanjiaojiang Bridge is located in the East China Sea, the wind and waves are urgent, and the main construction projects are on the sea. In addition, the hydrological, geological and meteorological conditions in the sea area are complex, and the typhoon and monsoon are greatly affected. It is listed by Zhejiang Provincial Department of Transportation as one of the five major difficulties and key projects in Zhejiang Province.