World's longest sea bridge spans 42.5-km over Jiaozhou Bay
As if rising from the clouds, the world's longest sea bridge, the latest marvel of modern Chinese engineering, opened for traffic on Thursday.
The 42.5-km span stretches across the wide blue waters of Jiaozhou Bay and connects the booming northern port city of Qingdao with an airport built on a nearby island and the industrial suburb of Huangdao. The first motorists to roll on to the Y-shaped bridge's sixlane, 33.5-metre-wide highway halved their journey time to the other side of the bay to just 30 minutes.
Built in four years at a cost reported by the Chinese state media as $2.2 billion, the bridge stands on 5,200 pillars and was designed entirely by Chinese engineers at the Shandong Gausu Group.
At least 10,000 workers toiled in two teams around the clock to build the bridge, working from opposite sides of the bay and linking the two ends together in the middle.
While they were working on the bridge, more engineers were simultaneously building an accompanying tunnel underneath the bay, which will help to ease the traffic flow.
A total of 450,000 tons of steel was used in the construction - enough for almost 65 Eiffel Towers - and 2.3 million cubic metres of concrete.
Chinese officials said that the bridge would be strong enough to withstand a magnitude 8 earthquake, typhoons or the impact of a 300,000-ton ship.
The bridge has eclipsed the previous world record span, the Lake Pontchartrain Causeway in Louisiana, by at least four km. However, it will be eclipsed in 2016 by another Chinese trestle bridge, which will linking Hong Kong with Macau and Guangdong province and will be about 50 km long.
World's longest sea bridge spans 42.5-km over Jiaozhou Bay