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Lake Pontchartrain Causeway

The Longest Bridge in the Western Hemisphere

Bridge on Lake Pontchartrain, Tchefuncte River in Atlantic Coastal Plain near Mandeville, LA

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The Lake Pontchartrain Causeway, sometimes only the causeway, is a fixed link composed of two parallel bridges crossing Lake Pontchartrain in southern Louisiana, United States. The longer of the two bridges is 23.83 miles (38.35 km) long. The southern terminus of the causeway is in Metairie, Louisiana, a suburb of New Orleans. The northern terminus is at Mandeville, Louisiana. Since 1969, it was listed by Guinness World Records as the longest bridge over water in the world; in 2011, in response to the opening of the longer Jiaozhou Bay Bridge in China, Guinness World Records created two categories for bridges over water: continuous and aggregate lengths over water. Lake Pontchartrain Causeway then became the longest bridge over water (continuous) while Jiaozhou Bay Bridge the longest…

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Waterbodies