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12. Seven Mile Bridge, Florida

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The Seven Mile Bridge in Florida offers incredible views of the Gulf of Mexico and Atlantic Ocean. Spanning 6.79 miles (10.9 kilometers), it is one of the longest bridges in the world and a key part of the Overseas Highway.
Completed in 1982, the bridge replaced an earlier structure, parts of which still remain. Popular with photographers and nature lovers, the bridge provides a unique vantage point for spotting dolphins, sea turtles, and birds. Due to its exposed position, the bridge is closed during severe storms to ensure safety.