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)

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)

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 Work	Status in %
1	Soil Investigation Works	85.0% of the soil investigation work for Pier foundation is completed.
2	Utility Works	71.36% completed
3	Piling Works	42.56% completed.
4	Pile Cap Works	24.75 % completed.
5	Pier Works	29.23 % completed.
6	Pier Cap Works	Pier Cap:17.98% Casting completed. 23.34% Erection completed.
7	U Girder Works	Pier Cap:11.83% Casting completed. 0.9% Erection completed.
8	Station	Works are in Progress.

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

– TMRG