L&T-STEC Restarts Mumbai Metro’s TBM Surya-1 towards CSMT

2020 had one last surprise in store!

Workers from Larsen & Toubro – Shanghai Tunnel Engineering Company (L&T – STEC) JV on Thursday recommissioned tunnel boring machine (TBM) XRE 2114-408 from Hutatma Chowk towards Chhatrapati Shivaji Maharaj Terminus (CSMT) for Mumbai Metro’s 33.5 km Line-3 (Aqua Line).

This Robbins Crossover XRE TBM, nicknamed Surya-1, had recorded a breakthrough in November for Package UGC-01 at Hutatma Chowk Station’s southern-end from Churchgate, and was then dragged to its northern-end through the 233 meter long station box using hydraulic jacks.

It has now been recommissioned on its 4th assignment towards CSMT (or CST) Station to build its final 551 meter long tunnel for Line-3’s up-line.

Package UGC-01: Cuffe Parade – CST – view Mumbai Metro Aqua Line info & route map

Mumbai Metro Rail Corporation (MMRC)’s Twitter handle shared this really nice video of the machine getting dragged, and then configured for launch with a view of the first temporary ring it started building:

Surya-1 lined up at Hutatma Chowk’s northern-end – via MMRC’s video
via MMRC’s video
1st temporary ring being built by Surya-1 – view MMRC’s video

With this development, here’s a status of package UGC-01 between Cuffe Parade and CST stations where 2 breakthroughs are pending, both at CST. This table is best viewed on a desktop device –

1UpCuffe ParadeVidhan Bhavan1128mCompleted
1UpVidhan BhavanChurchgate498mCompleted
1UpChurchgateHutatma Chowk649mCompleted
1UpHutatma ChowkCST551mNow in Progress (this post!)
2DownCuffe ParadeVidhan Bhavan1254mCompleted
2DownVidhan BhavanChurchgate481mCompleted
2DownChurchgateHutatma Chowk653mCompleted
2DownHutatma ChowkCST556mYet to Begin

The city now again has 4 active TBMs. 35 breakthroughs have been recorded so far (view last) and the following 7 are pending:

PackageSectionDistance, Status
UGC-01Hutatma Chowk – CST (up-line)551m, Now in Progress (this post!)
UGC-01Hutatma Chowk – CST (down-line)556m, Not Started
UGC-03Science Museum – Mahalaxmi (up-line)1118m, In Progress
UGC-03Mahalaxmi – Mumbai Central (up-line)837m, Not Started
UGC-03Science Museum – Mahalaxmi (down-line)1136m, In Progress
UGC-03Mahalaxmi – Mumbai Central (down-line)830m, Not Started
UGC-06Sahar Road – CSIA T1 (up-line)1516m, In Progress

For more updates, check out the Mumbai section of The Metro Rail Guy!


written by

Global traveler who prefers mass rapid transit

One Response to "L&T-STEC Restarts Mumbai Metro’s TBM Surya-1 towards CSMT"

  1. Rupraj Sengupta says:

    Compare with Kolkata line 2 tbm urvi had a breakthrough at sealdah on October 9 still sitting underground it retrieval shaft construction started on August7,was passing by that area another two months!


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