It took 2 million workers 10 years to construct the Akashi Kaikyo Bridge. &amp;lt;br /&amp;gt;It connects the city of Kobe, on Japan&amp;#39;s mainland, with Iwaya on Awaji Island. Before it opened, the only way to get between the two cities was by ferry. However, the waterway was prone to severe storms and when two ferries capsized in 1955, killing 168 people, public outrage convinced the government of the need for a bridge. It&amp;#39;s the longest suspension bridge in the world, with a length of 1,991 meters. &amp;lt;strong&amp;gt;Completion date: &amp;lt;/strong&amp;gt;April 5, 1998.