STN: Larsen & Toubro (L&T) has been selected as the lowest bidder for key system components of Mumbai Metro Line 4 and its extension, Line 4A. This 35.2 km corridor connects Wadala, Kasarvadavali, and Gaimukh.
Contract Details for Mumbai Metro Line 4
The contract, designated as Package CA-234, covers several critical systems:
- Rolling stock: 39 trains with six coaches each (total of 234 coaches)
- Communication-based train control (CBTC) signaling and train control
- Telecommunication systems
- Platform screen doors (PSDs)
- Depot machinery and plant (M&P) for Mogharpada Depot
L&T has partnered with Alstom Transport for the rolling stock and signaling systems. The partners for other components are currently unknown.
Background and Bidding Process
The tender process for this contract follows a delay of three years. Alstom Transport, which was awarded the rolling stock (MRS2) and signaling (CA72) contracts earlier, withdrew in 2022 due to delays in civil construction and depot finalization.
The Mumbai Metropolitan Region Development Authority (MMRDA) reissued the tender in February 2024 with an estimated cost of Rs. 4297.49 crore. The contract duration includes two years of defects liability maintenance followed by 17 years of comprehensive maintenance.
Technical bids were opened in November 2024. Two bidders participated:
- Larsen & Toubro
- NCC (in partnership with BEML for rolling stock)
The final bid values have not been disclosed yet.
Funding and Timeline
The design and construction of the contract will be funded by a EUR 545 million loan from Germany’s KfW. MMRDA will fund the 17-year maintenance period.
Delivery Schedule
According to the tender documents, the first prototype train must be delivered within 52 weeks of contract signing. The remaining deliveries are scheduled as follows:
- Next 9 trains by week 70
- Next 10 trains by week 88
- Next 10 trains by week 104
- Final 9 trains by week 112
Certification and Expected Operations
MMRDA aims to have the independent safety assessor (ISA) and the Commissioner of Metro Rail Safety (CMRS) certify Phase 1 of Mumbai Metro Line 4 with 20 trains by August 2026. However, delays in the bidding and contract process make this timeline unlikely.
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