MUMBAI (Metro Rail News): Mumbai Metro Rail Project progressed as J Kumar Infraprojects’s (JKIL) TBM Dhruv achieved breakthrough at the Airport Colony Shaft for Mumbai Metro 7A ( Red Line), which spans 3.17 km between Andheri and CSIA Terminal through 2 stations. TBM Dhruv recorded this development under Package CA-48 of the Mumbai Metro.
TBM Dhruv (T60) is a Ø6.68m dual-mode Terratec machine. TBM Dhruv was previously deployed by J Kumar – CRTG JV from 2018 to 2021 for Mumbai Metro Line-3 (Aqua Line) Package UGC-05, which spans 4.94 km from Dharavi Station to CSMIA T1, and 4.45 km Package UGC-06, which connects CSMIA T1 and Marol Naka.
For its first and only Assignment, TBM Dhruv started its tunnelling drive from CSMIA’s Terminal 2 Station’s shaft and constructed a 1.65 km tunnel for the up-line towards Airport Colony Ramp in 19 months. TBM Disha, working for the parallel down-line, achieved a breakthrough in April 2025.
In September 2019, J Kumar Infraprojects bagged Package CA-48 from Mumbai Metropolitan Region Development Authority (MMRDA) at Rs. 1,998 Crores.The scope of work under this Package includes construction of Line-7A’s viaduct, ramp, underground tunnels and 2 stations at Airport Colony and CSIA Terminal 2.
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