RInfra–Astaldi Erect 1st U-Girders for Mumbai Metro Line-4’s CA08/10

Towards the end of January, workers from the Reliance Infrastructure – Astaldi JV erected their first U-girders for packages CA-08 and CA-10 of Mumbai Metro’s 32.32 km Line-4 (Green Line) which will connect Wadala and Kasarvadavali. These milestones at the package level were achieved just a couple days after the team launched their first ever U-girder for package CA-12 in Thane.

Weighing 160 mt, these 28m long U-girders were cast at the firm’s combined casting yard for all 3 packages at Hiranandani Estate in Thane. Since then, their launch has become a regular nightly affair.

Package CA-10 – In the early morning hours of January 26, the first U-girder was placed into position on top of piers 403 and 404 on LBS Road in Chandan Nagar between the Gandhi Nagar and Surya Nagar stations.

This package’s scope includes the viaduct from Gandhi Nagar to Sonapur with 6 stations at Gandhi Nagar, Naval Housing, Bhandup Mahapalika, Shangrila & Sonapur (view route map)

Photo Copyright: Chetanck_007
Photo Copyright: Chetanck_007

Package CA-08 – In the early morning hours of January 29, the first U-girder was placed into position on top of piers 146 and 147, situated on either side of a foot overbridge, on the Eastern Express Highway (EEH) at Chembur between the Siddarth Colony and Amar Mahal stations.

This package’s scope includes the section from  Wadala to Amar Mahal Junction 6 stations at Bhakti Park Metro, Wadala TT, Anik Nagar Bus Depot, Suman Nagar, Siddarth Colony and Amar Mahal Junction (view route map)

Cool top-down view of the girder – Photo Copyright: Shrenik Gosavi
Erected on top of a FOB in front of Spectra tower on EEH in Chembur – Photo Copyright: Shivani Patil

With this development, all 5 civil packages of Line-4 have moved on to the erection stage. Back in December 2019, TPL-CHEC JV erected their first girder for CA-09 (Garodia Nagar to Surya Nagar) in Vikhroli, and for CA-11 (Mulund Fire Station to Majiwada) in Mulund’s Veena Nagar.

Here’s the status of Line-4 from MMRDA’s website as of January 29. Things are moving along quite nicely as they did initially for the 16.5 km Line-7 and 18.6 km Line-2A.

Sr. No.Name of WorkStatus in %
1Soil Investigation Works85.0% of the soil investigation work for Pier foundation is completed.
2Utility Works71.36% completed
3Piling Works42.56% completed.
4Pile Cap Works24.75 % completed.
5Pier Works29.23 % completed.
6Pier Cap WorksPier Cap:17.98% Casting completed.
23.34% Erection completed.
7U Girder WorksPier Cap:11.83% Casting completed.
0.9% Erection completed.
8StationWorks are in Progress.

For more updates, check out the Mumbai section of The Metro Rail Guy!


written by

Global traveler who prefers mass rapid transit

2 Responses to "RInfra–Astaldi Erect 1st U-Girders for Mumbai Metro Line-4’s CA08/10"

  1. Sameer GY says:

    One of the rare posts of yours without a supporting map 😀

  2. Jagaresh vishwakarma says:

    I am working in Rinfra astldi jv now my package name is CA-10
    I successfully completed this package first station pier which is named
    1)ST-8 Pier NVHS (Naval housing)
    2)ST-1 Pier BMPS I did both this and the first pier of this project in the night
    ErJagresh vishwakarma
    (Civil site engineer CA-10 package


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