2．Hong Kong-Zhuhai-Macau Bridge

Starting from the Lantau Island in Hong Kong, the Y-shaped bridge will have a total length of about 55 kilometers, including a 6.7-kilometer underwater tunnel and a 23-kilometer bridge over the sea. It will be the longest cross-sea bridge in the world.

The bridge will serve as an important channel linking Hong Kong, Macau, Zhuhai and the western part of the Pearl River Delta, one of the most economically developed areas in the Chinese mainland.

Construction of the bridge started in 2009. Its total cost will come to some 10 billion yuan ($1.5 billion). Once in operation, the bridge will shorten the four-hour drive from Hong Kong to Zhuhai to just 30 minutes.