In a significant infrastructure milestone, MMRDA has completed the first underground tunnel on Mumbai’s Metro Line 7A. The 1.647 km tunnel, built using a Tunnel Boring Machine (TBM), connects Andheri (East) to CSMIA. The breakthrough was achieved on April 17, 2025, in the presence of Maharashtra’s top leadership.
Introduction:
Mumbai witnessed a landmark event in its metro rail development as the Mumbai Metropolitan Region Development Authority (MMRDA) celebrated the successful breakthrough of the Tunnel Boring Machine (TBM) on Metro Line 7A. This marks the completion of the first underground tunnel in the city’s metro network.
Project Highlights:
- Tunnel Length: 1.647 km
- Connectivity: Andheri (East) to Chhatrapati Shivaji Maharaj International Airport (CSMIA)
- Tunnel Diameter: 6.35 metres (finished)
- Technology Used: Advanced Tunnel Boring Machine (TBM)
This underground segment is expected to significantly ease traffic congestion and offer seamless airport connectivity for commuters across Mumbai.
The milestone event was attended by prominent dignitaries including:
- Hon’ble Chief Minister of Maharashtra, Shri Devendra Fadnavis
- Metropolitan Commissioner, Dr. Sanjay Mukherjee (IAS)
- Additional Commissioners, Mr. Vikram Kumar (IAS) and Mr. Ashwin Mudgal (IAS)
Their presence reflected the significance of the achievement in Mumbai’s metro development roadmap.
Conclusion:
The successful tunnel breakthrough on Metro Line 7A stands as a testament to MMRDA’s commitment to expanding Mumbai’s metro infrastructure. It signifies a crucial step toward improved urban mobility, airport connectivity, and engineering excellence, paving the way for a smarter and more sustainable transportation network in the city.
Source: MMRDA | Image Credit (representational): MMRDA
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