Undersea tunnel for Mumbai-Ahmedabad bullet train corridor

27 Jan 2021 CW Staff

The National High Speed Rail Corporation Limited (NHSRCL) told media sources that seven Indian companies had participated in the pre-bid meeting for constructing the undersea tunnel of the corridor. NSHRCL also said that the tender for the construction of the tunnel has been floated and bids are invited till 19 February 2021.

The bullet train project will have a 21 km long underground corridor from Bandra Kurla Complex (BKC) to Kalyan Shilphata in Maharashtra.

NSHRCL said that about 7 km of this underground corridor is under the Thane creek. Out of this, a 1.8 km stretch will be developed under the sea bed, while the remaining part of the section is to be built under the mangroves marshland on either side of the creek.

The tender has been floated for tunnel development, which includes testing and commissioning for the double-line high-speed railway for the project using a tunnel boring machine (TBM) and a New Austrian Tunnelling Method (NATM).

4th Indian Cement Review Conference 2021

17-18 March

Click for event info

A geotechnical investigation of the undersea tunnel area was carried out earlier by a team of engineers from Japan's Kawasaki Geological Engineering firm, NHSRCL, and Rail India Technical and Economic Service Ltd (RITES).

In order to study the sea bed structure, a static refraction technique (SRT) survey was carried out by the team, involving firing a high energy sound wave towards the seabed from beneath the water surface as well as mapping the refracted sound wave to determine the density of the rock under the sea bed.

Also read: Mumbai-Ahmedabad bullet train gets environmental clearance

Image Source

During the pre-bidding stage for the construction of the undersea tunnel for the ambitious Mumbai Ahmedabad High Speed Rail (MAHSR), at least seven Indian companies have expressed their interest for the works, said officials. The National High Speed Rail Corporation Limited (NHSRCL) told media sources that seven Indian companies had participated in the pre-bid meeting for constructing the undersea tunnel of the corridor. NSHRCL also said that the tender for the construction of the tunnel has been floated and bids are invited till 19 February 2021. The bullet train project will have a 21 km long underground corridor from Bandra Kurla Complex (BKC) to Kalyan Shilphata in Maharashtra. NSHRCL said that about 7 km of this underground corridor is under the Thane creek. Out of this, a 1.8 km stretch will be developed under the sea bed, while the remaining part of the section is to be built under the mangroves marshland on either side of the creek. The tender has been floated for tunnel development, which includes testing and commissioning for the double-line high-speed railway for the project using a tunnel boring machine (TBM) and a New Austrian Tunnelling Method (NATM).4th Indian Cement Review Conference 202117-18 March Click for event info A geotechnical investigation of the undersea tunnel area was carried out earlier by a team of engineers from Japan's Kawasaki Geological Engineering firm, NHSRCL, and Rail India Technical and Economic Service Ltd (RITES). In order to study the sea bed structure, a static refraction technique (SRT) survey was carried out by the team, involving firing a high energy sound wave towards the seabed from beneath the water surface as well as mapping the refracted sound wave to determine the density of the rock under the sea bed. Also read: Mumbai-Ahmedabad bullet train gets environmental clearanceImage Source

Building Material

11 Dec 2025

Suraj Estate Wins Euromoney Award for India’s Best Residential Developer

"Suraj Estate Developers Limited has received the Euromoney Real Estate Award 2025 for ‘India’s Best Residential Developer’, positioning the company among globally benchmarked leaders in the sector. The recognition reflects its four-decade legacy in delivering high-quality residential and redevelopment-led projects across South Central Mumbai. The Euromoney Real Estate Awards, presented by the London-based Euromoney magazine, are widely regarded as one of the most credible global assessments of performance in real estate, banking and finance. Winners are selected through surveys of inte..

Building Material

11 Dec 2025

Lloyds Metals, Tata Steel Sign MoU to Explore Strategic Collaboration

"Lloyds Metals and Energy Limited has signed a non-binding Memorandum of Understanding with Tata Steel Limited to evaluate potential areas of strategic cooperation across mining, logistics, pelletisation and steelmaking. The MoU was signed by B Prabhakaran, Managing Director of Lloyds Metals, and Mr T V Narendran, CEO and Managing Director of Tata Steel. The partnership framework aims to leverage the natural operational synergies between both companies and assess opportunities in greenfield steel projects, iron ore mining, slurry pipeline infrastructure, pellet manufacturing in iron ore–ric..

Building Material

11 Dec 2025

IndiaAI, Gujarat Govt Host Regional Conclave Ahead of 2026 AI Summit

The IndiaAI Mission under the Ministry of Electronics and Information Technology, along with the Government of Gujarat and IIT Gandhinagar, convened a Regional Pre-Summit Event at Mahatma Mandir, Gandhinagar. The initiative is part of the build-up to the India–AI Impact Summit 2026, scheduled for 15–20 February 2026 at Bharat Mandapam, New Delhi. The conclave brought together senior policymakers, technology leaders, researchers and industry practitioners to examine how AI can accelerate economic, digital and social transformation across sectors. The programme focused on the overarching th..