There are several projects connecting these islands, some are completed and some are under construction. This paper introduces two topics, one is concerning the Akashi Brides project and the other is Tokyo Bay Cross Highway. These have been dubbed the last country's giant public works of the last century. These projects have both extensively used the modern surveying techniques for their construction. This paper outlines the surveying methodology that has contributed to the completion of these huge projects.
Japan has three to four thousand islands.
These four islands are connected by bridges and tunnels which are national projects. Akashi Strait Cross Bridge had been under construction between Honshu and Shikoku since 1986 and completed in 1998. It is for auto-use only, with six lanes of pavement. This is one of three routes connecting The Main island and Shikoku. They lie in The Inland Sea with in abundant of beautiful natural scenery, one part of the Japanese National Marine Park.