Akashi Bridge in Japon is the longest suspension bridge in the worldwith nearly 4 km length. Watch this HD documentary to know more about this mega .\r<br>\r<br>Full Documentary National Geographic Megastructures Longest Suspension Bridge Megafactories Full HD National Geographic, National Geographic .\r<br>\r<br>\r<br>\r<br>\r<br>\r<br>The Akashi Kaikyō Bridge , also known as the Pearl Bridge, links the city of Kobe on the mainland of Honshu to Iwaya on Awaji Island, in Japan. It crosses th.
