A damn big bridge

Hong Kong-Zhuhai-Macao Bridge

The Hong Kong-Zhuhai-Macao Bridge

Meanwhile, in Asia, massive infrastructure projects continue to get built:

Chinese President Xi Jinping has officially opened the world’s longest sea crossing bridge, nine years after construction first began.

Including its access roads, the bridge spans 55km (34 miles) and connects Hong Kong to Macau and the mainland Chinese city of Zhuhai.

The bridge cost about $20bn (£15.3bn) and should have opened in 2016. […]

Designed to withstand earthquakes and typhoons, it was built using 400,000 tonnes of steel, enough to build 60 Eiffel Towers.

About 30km of its total length crosses the sea of the Pearl River delta. To allow ships through, a 6.7km section in the middle dips into an undersea tunnel that runs between two artificial islands.

The remaining sections are link roads, viaducts and land tunnels connecting Zhuhai and Hong Kong to the main bridge.

The bridge was first conceived by Hong Kong construction tycoon Gordon Wu in 1983, apparently inspired by the Chesapeake Bay Bridge-Tunnel in Virginia. Construction started in 2009 and just wrapped up in February. Talk about persistence.

Fun facts:

Special cameras will be on the look-out for drivers on the bridge who show signs of getting sleepy, among other checks – yawn three times and the authorities will be alerted, local media report. […]

And drivers will have to change which side of the road they are on at the crossing. People drive on the left in Hong Kong and Macau but the bridge is Chinese territory and special merger channels have been built to cope with this.

There’s also this ominous bit: “As drivers cross the bridge their heart rate and blood pressure will be monitored. The information will be sent to the bridge’s control centre.” What?

Video from the South China Morning Post:

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