4. The Macau-Hong Kong Zhuhai Bridge
Location: Hong Kong’s Lantau Island
Total Expensed: $20 billion* Completed Year: 2018
An expensive engineering achievement is the Hong Kong Zhuhai Macau Bridge. The enormous bridge-tunnel system is made up of three cable-stayed bridges, four man-made islands, and an underwater tunnel. The world’s longest fixed link and open-sea sea crossing is this bridge.
Zhuhai Macau Bridge in Hong Kong ©Mohammed Janoo/Shutterstock
Its estimated “design life,” or how long it will survive, is 120 years. It was built in the 2010s for $20 billion. When Mott MacDonald was chosen to construct the bridge in 2009, he received the largest single design and construction contract in Hong Kong.
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