22 Terrifying Bridges You'll Think Twice About Crossing

12. Seven Mile Bridge, Florida

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Stretching across the turquoise waters of the Florida Keys, the Seven Mile Bridge is one of the longest bridges in the world. Connecting Knight's Key to Little Duck Key, it offers sweeping views of the Atlantic Ocean and the Gulf of Mexico. On calm days, the drive is serene, but when storms roll in, the exposed bridge becomes a dramatic and sometimes hazardous route.