Japan–Korea Undersea Tunnel at about ₩100 trillion (approx. US$90 billion), which would produce an extremely low benefit-to-cost result. In 2014, the South Korean Busan Development Institute estimated the undersea tunnel could create ₩54 trillion won (원54T, or US$53 billion) in economic benefits and provide about 45,000 jobs. In an April 2009 editorial, former Justice Ministers Daizō Nozawa of Japan and Kim Ki Chun of South Korea remarked on some of the similarities of the proposed Japan–Korea tunnel to the world's present longest undersea tunnel. The Channel Tunnel runs for 50.45 km linking the United Kingdom and France, and opened in May 1994: At
Genting Sempah Tunnel additional tunnel for the eastbound traffic was constructed between 1995 and 1997 when the Karak Expressway was upgraded from a 2-lane highway to a high-speed multi-lane expressway. Genting Sempah Tunnel The Genting Sempah Tunnel is the first highway tunnel in Malaysia. Located on the Kuala Lumpur–Karak Expressway, the 900-metre tunnel connects Hulu Gombak in Selangor to Genting Sempah, Pahang. This tunnel was constructed between 1977 and 1979. The tunnel was officially opened in 1979 by the former Minister of Works and Communications, Abdul Ghani Gilong. The tunnel was once used to be the longest road tunnel in Malaysia before the