CMRL Begins Tunnelling for Phase 2

Chennai Metro Rail Limited (CMRL) has commenced tunnelling operations between Perambur Barracks Road and Pattalam as part of the 118.9 km Phase 2 project. This stretch is a key component of Corridor 3, which connects Madhavaram to SIPCOT. Officials estimate that this initial tunnelling phase will be completed within six months.

The project involves complex engineering, including the construction of a stacked tunnel near Pattalam to accommodate space constraints. The tunnel boring machine is currently navigating through challenging geological conditions, including clayey soil and weathered rock, at depths reaching up to 30 metres. Once operational, the network aims to significantly improve connectivity for residents and businesses across northern and southern Chennai.