L&T Casts India’s Longest U-Girder for Bengaluru Suburban Rail Project

Larsen & Toubro (L&T) last week began pouring concrete to cast the first set of 31 meter long U-girders for an 8.027 km elevated viaduct of the 149 km Bengaluru Suburban Rail project (BSRP).

L&T’s casting yard is located in Devanahalli and supports construction of the project’s viaduct between Benniganahalli and Chikkabanavara on 23.866 km Corridor 2 (Baiyyappanahalli – Chikkabanavara) also known as ‘Mallige Line’.

The mould / formwork for casting was designed and manufactured by Winsteel Engineering Works.

At 30 meters – this is the longest ever U-girder to be cast in India for building a rail line’s viaduct. U-girders cast elsewhere for metro projects, such as Delhi, Bangalore, Mumbai, Kanpur etc., have typically been a maximum of 27.90 meters long.

Last week, L&T started launching 30 meter long U-girders in Chennai for the 116.1 km Chennai Metro Phase 2 project’s Line-3 on Old Mahabalipuram Road (OMR).

Per Karnataka’s Rail Infrastructure Development Company (K-RIDE)’s press release, L&T will casting a total of 450 such U-girders in Bengaluru. Each of these pre-tensioned U-girders is made of 69.5 cubic metres of M60 grade concrete and weighs 178 tonnes.

KRIDE had awarded Larsen & Toubro with BSRP corridor-2 viaduct’s Rs. 849.97 crore contract in 2022 with a 27 month deadline.

Besides constructing a 8.027 km elevated viaduct, their scope of work also includes ramps and formation in embankments / cuttings including blanketing, major bridges, minor bridges, RUB, ROB, ROR, retaining wall, sacrificial retaining wall and drains, utility diversions of the project’s 17.551 km long at-grade section.

For more updates, check out the Bengaluru Suburban section, Bangalore Metro section or my Home Page! Sign up for free instant email notifications on new posts over here. Like this post? See how you can get early-access to updates and support the site over here.

– TMRG