Civil engineering work related to extension of the turnback for Asakusa Station on the Ginza Line New construction and civil engineering work for Asakusa Substation (tentative name)

The turnback from Asakusa Station on the Ginza Line was extended by approximately 200m by the open cut method. An electric power substation facility was built by the open cut method. Construction work was done to connect the turnback and the electric power substation with a connecting tunnel by the blade propulsion method.