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 the island of Huangdao.

State-run 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.

The bridge supported by more than 5,000 pillars was built in four years.

Guinness World Records says 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.