L&T Casts Mumbai – Ahmedabad Bullet Train C3’s 1st Full Span Girder

Larsen & Toubro (L&T) on Friday evening poured concrete to cast their first full span box girder (FSBG) for 135.45 km Package C-3 of the 508.17 km Mumbai – Ahmedabad High Speed Rail (MAHSR Bullet Train) project.

Elevated Package C3 is the longest package in Maharashtra and will link Shilphata Ramp and Zaroli village (chainage Km 21.150 – Km 156.600). It includes 3 elevated stations at Thane, Virar and Boisar.

India’s National High Speed Rail Corporation Ltd. (NHSRCL) had awarded C3’s Rs. 15,697 crore contract in July 2023, and exactly a year later in July 2024 L&T started setting up one of their many casting yards for churning out FSBGs at chainage KM 118 near Dahanu.

Each FSG cast for this package will be 40m long, weigh 970 metric tons, and consist of 390 cubic meters of concrete with 42 metric tonnes of embedded within.

Here are some snaps of preparation underway at KM 118 yard. I hear L&T here plans to use 20 sets of moulds supplied by Winsteel to churn out 520 FSBGs in 12 months.

And here are some snaps of concrete getting poured. Casting for FSBGs typically takes 6-7 hours.

L&T is responsible for constructing 469.32 km (92.35%) of the main-line (Packages C3 + C4 + C5 + C6), all the way from Shilphata Ramp on the outskirts of Mumbai to Ahmedabad’s southern outskirts. This shouldn’t come as a surprise, but I hear some of the moulds from C4 & C6’s yards in Gujarat were transferred over since they had completed their job.

A list of all bullet train civil and system packages and their status can be viewed here.

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– TMRG