Kolkata Metro Purple Line: TBM Durga Completes Kidderpore-Victoria Tunnel Breakthrough, July 2026
Kolkata Metro's Purple Line reached a tunnelling milestone on 10 July 2026, when tunnel boring machine 'Durga' broke through at the proposed Victoria metro station. The drive from Kidderpore to Victoria took exactly one year, having started on 10 July 2025. The Purple Line will eventually run 18.84 km from Joka to Esplanade; about 7.74 km between Joka and Majerhat is already operational. Durga and its twin machine 'Divya' will now tunnel beneath the Maidan towards Park Street.

