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Qingdao Jiaozhou Bay tunnel is an under-sea road tunnel located in Shandong Province in eastern People's Republic of China. It crosses underneath Jiaozhou Bay, connecting Huangdao District with the city of Qingdao, at the narrow entrance to the bay. The South entrance is between the locations Beizhuang and Houchawan.

The 5.55 km long tunnel is part of a 9.47 km long expressway section opened June 30, 2011. The tunnel has two tubes each having three traffic lines. The subsea section is 9.47 km long. the toll plaza is near the South entrance.

The construction of the tunnel began on December 27, 2006 and was completed over five years later. It opened two months after the scheduled opening date at the same day as the Jiaozhou Bay Bridge. The bridge and tunnel were planned together as the Jiaozhou Bay Connection Project.