Qingdao Bay Bridge project is the main framework of Shandong Province "five longitudinal, four horizontal and one ring" highway network, and is the "one bridge" in the East-West bank channel of Jiaozhou Bay in the layout of Qingdao Road traffic network. After the completion of the bridge, Qingdao will further improve the East-West cross sea traffic relationship, promote the economic strategy of Qingdao to move west, and play a positive role in promoting the development of Jiaodong Peninsula Urban Agglomeration and tourism. Qingdao Bay Bridge under construction is divided into several sections, of which, the project of Lot 12 uses two series products of PHC ab600 * 130 ab600 * 110 of Sanhe brand.