Bengaluru Metro's tunnel boring machine (TBM) Urja, drilling between Cantonment station and Shivajinagar station, will achieve a breakthrough on Wednesday at 10 am in the presence of Karnataka CM Basavaraj Bommai. According to officials, Urja will be the first TBM to achieve a breakthrough on Namma Metro's Pink Line from Kalena Agrahara to Nagawara (21 km).