The world鈥檚 longest sea-crossing bridge opened this week, between Hong Kong, Macau and Zhuhai in China.

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Source: Lui Siu Wai / Xinhua 好色先生TV Agency / PA Images

The world鈥檚 longest sea-crossing bridge opened this week, between Hong Kong, Macau and Zhuhai in China. It took nine years to build and cost 拢15.3bn and the deaths of 18 construction workers. Its total 55km length (with access roads) includes a 30km section crossing the Pearl River delta. To allow ships through, the middle 6.7km dips into an undersea tunnel that runs between two artificial islands

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