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China's land-underwater 'highway' connects mainland to Hong Kong, Macau

Gao Xinglin, the bridge's project planning manager, said the construction of the 6.7-kilometre underwater tunnel gave him sleepless nights
World's longest sea bridge
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World's longest sea bridge

Touted as an engineering wonder, it connects Hong Kong, Macau and mainland China
Sea bridge
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Sea bridge

It includes a snaking road crossing and an underwater tunnel
Too much steel!
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Too much steel!

The magnificent bridge reportedly uses enough steel (420,000 tonnes) to build 60 Eiffel Towers
First peek after 9 years
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First peek after 9 years

Nine years after construction began on the 55 km crossing, the Chinese government offered first peek into the megaproject
60% less travel time
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60% less travel time

Experts say 'bridge to be in use for 120 years and it will boost business by cutting travel time by 60 percent'