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is one of the Expressways of Japan from Tosu to Oita linking with the Higashi Kyushu Expressway. It runs through the southern half of Fukuoka prefecture, and the northern half of the Oita prefecture. The total length is 137.8 km. == History == * February 5, 1987, the Tosu Junction to Asakura Interchange was opened. * July 20, 1989, a section from Yufuin to Beppu Interchanges was opened to traffic. * March 10, 1990, a section from Asakura to Hita Interchanges was opened to traffic. * December 3, 1992, a section from Beppu to Oita Interchanges was opened to traffic. * December 15, 1994, a section from Hiji Junction to Hayami Interchange was opened to traffic. * March 10, 1995, a section from Hita to Kusu Interchanges was opened to traffic. * March 28, 1996, a section from Kusu to Yufuin Interchanges was opened to traffic. * November 26, 1996, a section from Oita to Oita Mera Interchanges was opened to traffic which made the Oita Expressway from Tosu to Oita fully accessible with no gaps. * November 11, 1998, a section from Haki to Hita Interchanges which made Oita Expressway with four lanes. * November 27, 1999, the Oita Mera Interchange to the east was opened to traffic. * March 21, 2000, a section from Hita to Kusu Interchanges which made with four lanes. * March 30, 2002, a section from Hayami Interchange to the east was opened with other freeway. * May 25, 2002, a section from Yufuin Interchange to Hiji Junction which made with four lanes. * August 30, 2004, a section from Mizuwake Parking Area to Yufuin Interchange which made with four lanes. * March 19, 2005, a section from Kusu Interchange to Mizuwake Parking Area which made Oita Expressway from Tosu to Oita with four lanes now being connected with no gaps. * August 11, 2008, the Oita Mitsuyoshi Interchange was fully accessible. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ōita Expressway」の詳細全文を読む スポンサード リンク
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