East Nippon Expressway Co. (NEXCO East) said the section of the Kan-etsu Expressway between the Koide Interchange in Uonuma, Niigata Prefecture, and the Tsukiyono Interchange in Minakami, Gunma ...
Construction workers have been using heavy equipment called a shield machine to bore a 16-kilometer underground tunnel, which will stretch from underneath the Kan-etsu Expressway’s Oizumi ...
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