The Lake Pontchatrain Causeway also known as the Causeway is the worlds second longest bridge at 23.87 miles behind the Bang Na Expressway (33.51 mi) , the Causeway is the longest bridge in the world over water as of this posting.  The Lake Pontchatrain Causeway crosses over Lake Pontchartrain in southern Louisiana, USA.  The bridge connects Metairie, Louisiana, a suburb […]