The Royal Gorge Bridge in Colorado in the United States holds the record for the tallest suspension bridge in the world with its roadbed towering at 1,053 feet (321 meters) above the ground below. You can walk or drive this bridge, at approximately 1,270 feet long it makes for a breathless journey. Built in 1929 for $350,000 weighing roughly 1500 tons, the cost today would easily exceed $15 million. Taking care of this aged bridge is no small feat either- the walkway alone is made of 1,270 planks of deck; about 250 are replaced annually.
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