About the implementation of the road surface cavity survey in the excavated section of the Tokyo outer ring road

January 8, 3rd year of Reiwa
East Nippon Expressway Co., Ltd. Kanto Regional Head Office

Thank you for your continued understanding and cooperation in the Tokyo Outer Ring Road Project.

In the vicinity of the tunnel construction site at 2-chome, Higashi Tsutsujigaoka, Chofu City, depressions in the ground surface and cavities in the ground have been confirmed, and we are causing inconvenience to everyone in the area, such as closing roads.

Currently, we are investigating the cause and effect of the collapse event and tunnel construction, but in order to confirm the safety of the section that we have dug up to now, we will conduct a cavity survey of the road surface in Nerima Ward from around mid-January. We will inform you that it will be carried out.

Please see the Tokyo Gaikan Project website for the schedule of the road surface cavity survey.