1. Akashi Kaikyo Bridge At 3,900 metres long, this masterwork of Japanese engineering can survive an earthquake up to 8.5 on the Richter scale.
BIGGEST ARCH
2. Dubai’s Mile- Long Bridge Leave it to boomtown Dubai to dream up a fantastically futuristic proposal for a mile- long double arch bridge spanning 12 lanes of traffic 
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BRIDGE OF THE FUTURE
3. Bering Strait Bridge The proposed 88.5km (55mi) bridge linking North America and Asia would carry vehicle traffic, a high-speed train and pipelines for natural gas and oil
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