World's most: Lake Ponchartrain Causeway, World's Longest Bridge over water is 24 miles. Links New Orleans, LA on the south to Mandeville, LA on the north.

Lake Ponchartrain Causeway, World's Longest Bridge over water is 24 miles. Links New Orleans, LA on the south to Mandeville, LA on the north.

Lake Ponchartrain Causeway, World's Longest Bridge over water is 24 miles. Links New Orleans, LA on the south to Mandeville, LA on the north.
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Lake Ponchartrain Causeway, World's Longest Bridge over water is 24 miles. Links New Orleans, LA on the south to Mandeville, LA on the north.

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