The tunnel will run from Churchgate to Hutatma Chowk station as part of the corporation’s Metro 3 Corridor project.
The breakthrough is the first of its kind inside the tunnel using a dual mode hard rock tunnel boring machine (TBM), which has completed the downline stretch in 275 days using 502 rings.
MMRC Managing Director Ranjit Singh Deol said the various heritage buildings nearby the project works made the task “a bit challenging”.
“However, this unique station, in the vicinity of Hutatma Chowk, is being built by using a combination of Cut-and-Cover and New Austrian Tunnelling Method (NATM),” he said.
“This station will provide accessibility to the business centres of South Mumbai.”
Package 1 of the project consists of Cuffe Parade, Vidhan Bhavan, Churchgate and Hutatma-Chowk stations, and is now more than 50 per cent complete.
Following the recent breakthrough, the total tunnelling of the project is now 88 per cent complete.
For more information visit the MMRC website.
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