Pune Metro’s TBM S78 Records Breakthrough at Budhwar Peth

Back on July 31, Gulermak – Tata Projects JV celebrated tunnel boring machine S78’s breakthrough at Budhwar Peth Station on Pune Metro’s 16.59 km Line-1 (Purple Line). 

This was S78’s third (and final) breakthrough for the up-line tunnel, and the sixth and final breakthrough on the 3.78 km Package UGC-01 connecting Range Hills Ramp – Budhwar Peth.

This was also the 6th breakthrough on the entire 6.52 km underground section of the 31.254 km Pune Metro Phase 1 project between Range Hills Ramp – Swargate. A week prior to this breakthrough, TBM S79 (Mula) arrived at Budhwar Peth Station.

Nicknamed Mutha, this Ø6.61m Terratec EPB machine was also commissioned in mid-March from Civil Court Station towards Budhwar Peth – a distance of 680 meters – and on the way excavated below Mutha’s 150m wide river-bed which has an 80 meter-wide water channel.

Route of Pune Metro Line-1’s underground section – view Pune Metro route map & info

Some snaps via followers Sarit Chhipa and Avinash Choudhary:

One of TBM Mula (S79)’s shields and S78 (Mutha)’s cutterhead


With this development, tunneling works are now just pending on UGC-02 (Budhwar Peth – Swargate). TBM S81 is actively working on its up-line and is close to Mandai Station where piling work is ongoing.

As I shared earlier, there’s no clarity on which TBM will build the parallel down-line tunnel for UGC-02 – whether it’s S81 or S78. If I had to bet, my money would be on S78.

For more updates, check out the Pune Metro section or my Home Page!


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Global traveler who prefers mass rapid transit

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