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More Amazing Engineering from China High Speed Rail



from the Daily Mail, UK. - Workers are constructing a huge high-speed railway bridge over another high-speed railway bridge which remain open. 

To complete the challenging engineering feat, workers built two bridge sections at an angle and then swinging them into position. 

The two girders, each weighing 7,000 tonnes and measuring 128 metres (419 feet) long, rotated 19.5 degrees counter-clockwise simultaneously before connecting.

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