琼州海峡
The expressway is complete for the majority of its length except for two major water crossings that have yet to be built. A fixed link across the Bohai Sea is required to join the first missing link from Dalian to Yantai. The construction of a tunnel was announced in February 2011. Second, a bridge has to be constructed across the Qiongzhou Strait from Mainland China to Hainan. Currently, the southern terminus is Xuwen County, in the city of Zhanjiang, Guangdong, because the fixed link to Haikou, Hainan has not been built yet.