Each weekday over 30,000 cars cross Lake Pontchartrain on the longest bridge in the world, The Lake Pontchartrain Causeway. The most familiar part of the system is the 24-mile long bridge which consists of two, 2-lane spans running parallel across Lake Pontchartrain connecting
Jefferson Parish on the south shore at
Metairie and
St. Tammany Parish on the north shore at
Mandeville.
