Humen No. 2 Bridge. The upstream of the bridge is about 20km from the Pearl River Huangpu Bridge and the downstream is about 10km from the Humen Bridge. The project has a total length of 12.891km, adopts the eight-lane expressway technology standard, and has a design speed of 100 kilometers per hour. The entire line is a bridge. There are two large bridges across the river. Chung, Pingtung, Seagull Island and Shatian interchange with each other. The bridge has become a world-class bridge connecting the east and west sides of the Pearl River.