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

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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.

Photo by Karshan Chaudhari

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.

Photo by Karshan Chaudhari

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.

Corridor-2 is displayed in Blue (Source: KRIDE’s website) – view Bengaluru Suburban Rail Project project information
Photo by MB Patil
L&T Casts India’s Longest U-Girder for Bengaluru Suburban Rail Project
Photo by MB Patil

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– TMRG





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