Premier Li Keqiang visits the Hong Kong-Zhuhai-Macao Bridge, which is undergoing construction, in Macao on Oct 11, 2016. [Photo/gov.cn]

It is the second time that he has visited the bridge. In 2009, he, then the Vice-Premier, held its groundbreaking ceremony at South China's Zhuhai city.

The project is expected to be completed at the end of 2017. Spanning 55 kilometers, it will be the longest cross-sea bridge in the world.

Analysts said the project will benefit the communication among Hong Kong, Macao and Chinese mainland.