Kansai International Airport

Kansai International Airport is an international airport located on an artificial island in Osaka Bay, south of Osaka, . It opened on September 4, 1994.

 

Satellite photo of Kansai Airport (lower-right island) in Osaka Bay. Kobe Airport is being built on the unfinished island near the middle of the photo. Central Osaka is in the upper-right corner.

 

A man-made island, 4 km long and 1 km wide, was proposed. Engineers faced the risk of earthquakes (very high) and typhoons (with storm surges of up to 3 meters).

Construction started in 1987. The sea wall was finished in 1989 (made of rocks and 48,000 tetrahedral concrete blocks). Three mountains were excavated for 21 million cubic meters of landfill. 10,000 workers and 10 million work hours over 3 years, using 80 ships, were needed to complete the thirty-meter layer of earth over the sea floor and inside the sea wall. In 1990, a three-kilometer bridge was completed to connect the island to the mainland at Rinku-Town, at a cost of $1 billion.