China has opened the world's longest sea bridge between Guangdong province, Hong Kong, and Macau. The length of the structure is 55 kilometers, of which 38 kilometers are sections of the bridge. For comparison, the length of the Crimean bridge is 19 km. The main part of the bridge is a 29.6 km of double three-lane carriageway that includes a 6.7 km underwater tunnel between two artificial islands and three raised sections above the water's surface.
Celebrating #LunarNewYear with AI! More than 100 self-driving vehicles cross world's longest sea bridge. The Hong Kong-Zhuhai-Macao Bridge is expected to open to traffic later this year #ChineseNewYear #YearoftheDog pic.twitter.com/xuOTcKhrpq— China Xinhua News (@XHNews) February 18, 2018
— Vala Afshar (@ValaAfshar) February 20, 2018
— Baidu Inc. (@Baidu_Inc) February 16, 2018
The project's cost is estimated at 110 billion yuan (almost 16 billion dollars). Around 22% of the total costs were financed by the government, and the remaining 78% — a consortium of banks led by the Bank of China.