China’s Jiaozhou Bay Bridge, the world’s longest cross-sea bridge, linking the eastern port city of Qingdao and the offshore island Huangdao, opens on June 30, 2011.

China has opened the world's longest cross-sea bridge.

The Jiaozhou Bay bridge is 26 miles (42 kilometers) long and links China's eastern port city of Qingdao to an offshore island, Huangdao.

CCTV says the 110-foot (35-meter)-wide bridge is the longest of its kind and cost more than 10 billion yuan ($1.5 billion).

CCTV says the bridge passed construction appraisals on Monday and the bridge and an undersea tunnel opened to traffic on Thursday.

It has taken four years to build the bridge, which is supported by more than 5,000 pillars.

According to Guinness World Records, the previous record holder for a bridge over water is the Lake Pontchartrain Causeway in Louisiana. The Chinese bridge is more than 2.5 miles (4 kilometers) longer.