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26 Feb 2025
Chennai Metro: TBM Adyar Breaks Through
Larsen & Toubro’s (L&T) tunnel boring machine (TBM) Adyar (S-1326A) has achieved its first breakthrough at Adyar Junction for Package TU-02 on Chennai Metro Phase 2’s Line 3. This milestone marks the fourth breakthrough in the 12 km tunnel stretch between Kellys and Taramani Road Junction stations. The 116.1 km Phase 2 project aims to improve connectivity across Chennai, with Line 3 spanning 45.8 km and 49 stations—20 elevated and 29 underground. A Key Milestone for Chennai Metro TBM Adyar, a 100m-long Herrenknecht earth pressure balance (EPB) machine, began its assignment at Greenways R..