MMRC Publishes Mumbai Metro Line 11’s Revised Alignment Map

This development is from June and might not be news to some of you, but anyways – Mumbai Metro Rail Corporation Ltd. (MMRC) last month invited bids for conducting an underground utility survey for Mumbai Metro’s Line-11 which is proposed to run along South Mumbai’s eastern seaboard.

Line-11 is a southern-extension of Line-4 (Green Line) and will be Mumbai’s third underground line after Line-3 (Aqua Line) & Line-7A (Red Line). It was originally envisioned as a 12.77 km line connecting Wadala – CSMT (Chhattrapati Shivaji Maharaj Terminus) via 10 stations (2 elevated & 8 underground).

Maharashtra’s Urban Development Department had handed over Line-11’s execution to MMRC in January 2023 which then re-examined its alignment and decided to re-route it to improve its utility and increase ridership.

Within MMRC’s tender notice, they had included an official map which shows Line-11’s new alignment taking a more central route south of Byculla, passing by Nagpada, Bhendi Bazar, CSMT, Fort, and extending all the way to SPM Chowk near the Gateway of India in Colaba’s Apollo Bandar.

Here’s a copy of Line-11’s revised alignment which I estimate to be approximately 16 km long. 15 stations are planned to be built at Anik Bus Depot, Wadala Depot, CGS Colony, Ganesh Nagar, BPT Hospital, Sewri, Hay Bunder, Coal Bunder, Reay Road, Byculla, Nagpada Junction, Bhendi Bazaar, Crawford Market, CSMT Metro (interchange with Line-3 / Aqua Line), Horniman Circle, and SPM Circle.

Per the map, Line-11’s train depot will be built at Wadala right between Mumbai Monorail’s depot and Lodha New Cuffe Parade towers where several casting yards are located (view on Google Maps).

The line’s construction is now expected to cost Rs. 16,000 crore, nearly double of Rs. 8739 crore as suggested by the original Detailed Project Report (DPR) prepared by the Delhi Metro Rail Corporation (DMRC) in 2018.

Japan International Cooperation Agency (JICA) has several times in the past shown interest in providing an Official Development Assistance (ODA) loan for Line-11’s construction.

With this development, I’ve updated my Future Network Map for Mumbai Metro. Since Line-4’s elevated section between Anik Bus Depot – Bhakti Park has already been built, it appears Line-11 from Anik Bus Depot will be built as a branch / spur line and won’t be a natural extension of Line-4. We’ll have to wait and see how this plays out.

There’s a long way to go for Line-11’s alignment to be finalized and approved for construction by the state and central governments, and at this point I expect construction work to start no sooner than 2027. Prior to that, other necessary steps include securing financing, preparing detailed designs, appointing a General Consultant, appointing consultants for EIA, SIA & geotechnical investigation, and conducting the civil tendering process.

Coming back to the survey tender, I won’t be holding my breath to track the lowest bidder or winner. It’s a low value tender with a short duration (work might even be completed by now), but here’s more information about the tender’s bidding schedule for those interested:

• Submission Due Date: June 14, 2024 at 12 noon
• Bid Opening: June 14, 2024 at 12:01 PM
• Contract Duration: 1 month

Brief Scope: Appointment of Agency for undertaking Underground Utility Survey for Metro Line 11 revised alignment (Wadala to SPM Circle)

Detailed Scope

• A. Carrying out underground utility survey by Ground Penetration Radar (GPR) and preparation of plans (maps) and report of the entire area/areas indicated for assessing the existing underground utilities.
• B. The survey should include mapping of underground utilities, viz, RCC/metallic pipelines, sewer, gas, water, petroleum and chemical pipelines, HV and LV power cables, telecommunications ducts, telecommunications cables and any other buried/surface plant or apparatus.
• C. Collecting information on obstacles from related organizations. In the information, the facility name, location, type of utility, utility size and collection of as as-built drawing.
• D. Preparation of survey drawings, survey sheets, reports, site photograph and other references, based on the Engineer-supplied survey-sheet Preparation of report.
• E. GPR systems that can reach up to the depth of 5meters and produce high resolution images.
• F. Depth of utility services shall be measured from surface and output images should mention depth of subsurface features from Surface.
• G. Result formats should be in Colour hardcopy. Measurements should be produce in excel sheets. Various subsurface features interpreted should be produce in hardcopy and softcopy.
• H. The contractor is required to submit a write-up of entire procedure including field observation, grid settings, device settings, parameters selection, formulas applied, post processing procedures, etc in about 3000 words in MS Word format.
• I. Assist MMRC in obtaining necessary data from BMC, Mumbai Port Authority, BPCL, HPCL, Railway, etc.
• J. After completion of field survey, the report preparation is done which includes the following points:
  1. Evaluation of the survey results
  2. Drawing of Surveys (Plan drawings of Obstacles location with having coordinates, Typical cross-section drawing only for main and complicated structures, etc., in AutoCAD format)
  3. Reports including Survey sheet, Site photograph, etc.
  4. Reference data (As-built drawings, other references, etc.)

For more updates, check out the Mumbai section or my Home Page! Sign up for free instant email notifications on new posts over here. Like this post? Get early-access to updates and support the site over here.

– TMRG

Hat-Tip: Esmail Beguwala