Mumbai explores 11 tunnels amid surface constraints

19 Feb 2024 CW Team

The city began to change in the late 1990s when a large number of flyovers came to dominate the surrounding area. Today's flyovers are at maximum length due to the city's restriction on horizontal expansion and the fast rising vehicle density.

Because the city is filled with bridges and elevated metro corridors, planners believe that subterranean construction is a feasible alternative for both road corridors and metro projects, despite the associated costs. Currently, the Mumbai Metropolitan Region (MMR) is home to at least 11 tunnel-based projects in various stages of development, ranging from east-west corridors to rail systems like the metro and bullet train.

One of the city's first subterranean mass transit projects, the Metro 3 underground corridor (Colaba-Bandra-Seepz), is almost complete. Final touches are being applied to the nation's first underwater twin tunnels, which are a part of the Mumbai Coastal Road project. Work on the bullet train tunnel and Metro Line 7A (Andheri to domestic airport) is ongoing. Authorities have also invited tenders for four of the nine underpasses on the Western Express Highway (WEH) and Eastern Express Highway (EEH) for grade separation projects. Finally, contractors have been selected for three east-west tunnel-based road corridors.

Infrastructure Energy

17 Sep 2025

Adani Power To Build 2,400 MW Plant in Bihar

Adani Power on Saturday (September 13, 2025) announced plans to set up a 2,400 MW ultra super-critical power plant in Bihar at an investment of $3 billion (around Rs 26.48 billion).The company has signed a 25-year Power Supply Agreement (PSA) with Bihar State Power Generation Company Ltd (BSPGCL) to supply electricity from the project, which will be located at Pirpainti in Bhagalpur district.The PSA follows a Letter of Award issued by BSPGCL to Adani Power on behalf of North Bihar Power Distribution Company Ltd (NBPDCL) and South Bihar Power Distribution Company Ltd (SBPDCL) in August. Adani P..

NTPC Plans Nuclear Power Projects Via JV and Standalone Routes

Power major NTPC is planning to develop nuclear power projects both through joint ventures and on a standalone basis, CMD Gurdeep Singh has said.The company is collaborating with nuclear technology providers and state governments to explore individual nuclear projects, Singh added.Currently, the NTPC Group has an installed capacity of 82,926 MW across 53 NTPC-owned stations and 53 joint venture or subsidiary stations, drawing power from coal, liquid fuel, hydro, and solar sources.In December 2024, Singh had announced NTPC’s ambitious plan to enter the nuclear energy sector, a move expected t..

RVNL Wins $21.6 Million Bhopal Division Traction Substation

Rail Vikas Nigam (RVNL) has been declared the lowest bidder for a $21.6 million traction substation contract awarded by the West Central Railway.The project covers the design, modification, supply, erection, testing, and commissioning of a 220/132kV/2×25kV Scott-connected traction substation, switching posts, Auto-Transformer installations, and Supervisory Control and Data Acquisition (SCADA) systems in the Bina–RTA section of the Bhopal Division. The execution period is set at 540 days.In a regulatory filing, RVNL stated that the order was secured in the ordinary course of business and doe..