The Hongkong-Zhuhai-Macoa bridge is now officially open. The bridge is 55-km long. It consists of a 22.9-km main bridge and a 6.7-km underground tunnel.  Surface area of the bridge is 700,000 square meters. It’s about the size of 98 standard football fields. Its main girders are made up of 420,000 tons of steel plates. The weight is equal to about 60 Eiffel Towers. It has the world’s longest immersed tube highway tunnel. The rubes reach a depth of up to 40 meters underwater. The bridge is curved as its piers are placed in the direction of water flow.

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