This is technically not true.  The longest bridge in the world is the Second Lake Pontchartrain Causeway, which joins Mandeville and Metairie, Louisiana, USA.  It is 38.422km long, and was completed in 1969.\n \nWhat the Akashi-Kaikyo bridge has is the longest bridge span, which is the distance between the suspension towers.
what is the biggest bridge in the world?