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连接日本两个大岛一北海道和本州的、世界最长的青函隧道长53.85km。隧道导坑于1983年1月贯通于津轻海峡海底,目前还没有通车。留给建设者们还有100 m 的掘进工程,此段和计划开行高速铁路列车的主干线平行。隧道工程用了将近20年的时间,但当局现在还不能利用。在最近的20年内,由于北海道空运的发展,将使北海道和各地相通,而日本北方的铁路,据经济学家计算,每年的亏损巨额为一亿美元。
The longest green tunnel linking the two largest islands in Japan, Hokkaido and Honshu, is 53.85km long. Tunnel guide pit in January 1983 through the sea of Tsugaru Strait, there is no traffic. Leave the builders 100 meters of tunneling works, which is parallel to the planned main high-speed railway line. The tunnel project took nearly 20 years, but the authorities can not yet use it. In the recent 20 years, Hokkaido will be interconnected with each other due to the development of air transport in Hokkaido. The railway in northern Japan, according to economists, amounts to a huge loss of 100 million U.S. dollars each year.