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This mesmerizing bridge that transforms into a tunnel is an 'engineering wonder' - Business Insider

Business Insider

This mesmerizing bridge that transforms into a tunnel is an 'engineering wonder'
Business Insider
When the $200 million structure was completed in 1964, the American Society of Civil Engineers named it "one of the seven engineering wonders of the modern world." To construct it, workers dug huge underwater ditches for two tunnels and lined them with ...

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