A survey ship sails on the Xihoumen water channel in Jintang Island, Dinghai district, Zhoushan, East China's Zhejiang province on March 11 to investigate the geographical conditions for the construction of the Ningbo-Zhoushan Railway project. [Photo/zj.zjol.com]

Technicians conduct surveying work on the ship. The project includes building a 1,488-meter railway-highway combined bridge on the Xihoumen water channel, which will be the world's longest bridge of its kind when completed. [Photo/zj.zjol.com]

The design sketch of the to-be-built 1,488-meter Xihoumen Super-Large Bridge [Photo/WeChat account: CRCC_CN]