Qing-Huang Tunnel
The Qing-Huang Tunnel is an under-sea road tunnel located in Shandong Province in eastern People's Republic of China
People's Republic of China
China , officially the People's Republic of China , is the most populous country in the world, with over 1.3 billion citizens. Located in East Asia, the country covers approximately 9.6 million square kilometres...

. It transects Jiaozhou Bay
Jiaozhou Bay
The Jiaozhou Bay is a sea gulf located in Qingdao Prefecture of Shandong Province. It was a German colonial concession from 1898 until 1914....

, connecting Huangdao District
Huangdao District
Huangdao District is a district in Qingdao, Shandong, China. It is situated on the west bank of Jiaozhou Bay. It is identical to Qingdao Economic and Technological Development Zone which was launched in 1985 after the zone was merged with Huangdao District and set up the Free Trade Zone in...

 with the city of Qingdao
' also known in the West by its postal map spelling Tsingtao, is a major city with a population of over 8.715 million in eastern Shandong province, Eastern China. Its built up area, made of 7 urban districts plus Jimo city, is home to about 4,346,000 inhabitants in 2010.It borders Yantai to the...

 (see map). It is 9.47 kilometres (5.9 mi) long with a portion of that underwater. It began construction on December 27, 2006 and was completed over five years later when it opened on July 1, 2011, two months after the scheduled opening date. It opened the same day as the nearby Jiaozhou Bay Bridge, considered at the time the world's longest open water bridge by Guinness World Records
Guinness World Records
Guinness World Records, known until 2000 as The Guinness Book of Records , is a reference book published annually, containing a collection of world records, both human achievements and the extremes of the natural world...

. The bridge and tunnel were planned together as the Jiaozhou Bay Connection Project.
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