Although20％ of the world’s earthquakes with a magnitude of 6.0 or greater are concentrated in Japan, the country has nevertheless repeatedly risen from the damage. One of the major factors for this reconstruction has been Japanese technology. This video shows an exemplary bridge reconstruction in Kumamoto Prefecture, located in the south of Japan. In April, 2016, the New Aso Bridge, part of the region’s main road, collapsed due to a magnitude 7 earthquake. Please take a look at the quality, speed, and accident-free capabilities of Japanese construction technology.

As Japan has many mountainous areas and the urbanization of the flat land has progressed significantly, many tunnel structures have been adopted. In addition, because natural disasters occur very frequently, Japanese road engineers have developed and applied advanced technologies not only for tunnel construction, but also for tunnel operation and maintenance. We will introduce some of the Japanese tunnel construction, operation, and maintenance technologies that have been fostered by these land conditions.

In the Seto Inland Sea, long-span bridges connecting Honshu and Shikoku were constructed using the world's highest level of technology, including the Akashi-Kaikyo Bridge, one of the world's largest suspension bridges. The construction, maintenance and operation of these long-span bridges show the best of Japan's bridge construction and maintenance technology. This video introduces some of Japan's world-class technology, focusing on the technology used in the maintenance stages.