The drive from Krishna Rajendra Market is said to have taken 20 months. Bangalore Metro Rail Corporation (BMRCL) officials said the 5.5m diameter TBM had been stuck in loose soil for four to five months, and required a very slow pace.
The machine will undergo maintenance before undertaking its next drive of approximately 900m to Majestic station.
BMRCL managing director Pradeep Singh Kharola said that all tunnelling works will be completed by February 2016. This portion of the alignment includes three underground stations.
Kharola said the first tunnel, on the southern line, should be operational December 2016.
