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The World’s Longest Bridge
Rumor has it that a legendary (传说的) six-headed monster lurks in the deep waters of the Tyrrhenian Sea between Italy and the island of Sicily.
(46) When completed in 2010, the world’s longest bridge will weigh nearly 300,000 tons, equivalent to the iceberg that sank the Titanic, and stretch 5 kilometers long. "That’s nearly 50 percent longer than any other bridge ever built, "says structural engineer Shane Rixon.
(47) They’ re suspension bridges, massive structures built to span vast water channels or gorges (峡谷). A suspension bridge needs just two towers to shoulder the structure’s mammoth (巨大的) weight, thanks to hefty (高强度的) supporting cables slung between the towers and anchored firmly in deep pools of cement at each end of the bridge. The Messina Strait Bridge will have two 54,100-ton towers, which will support most of the bridge’s load. The beefy (结实的) cables of the bridge, eac