Chennai Metro Phase 2 Hits Structural Milestone with Completion of Corridor 5 U-Girders

Chennai Metro Rail Limited (CMRL) has achieved a major civil engineering milestone for Phase 2 of its network expansion. Contractors have successfully finished casting all 824 precast U-girders required for the 13.1-kilometer elevated viaduct section of Corridor 5. The final 19.5-meter-long structural component was cast at the dedicated city casting yard, paving the way for accelerated superstructure installation on the line connecting Madhavaram Milk Colony to Sholinganallur.

The execution of this package (C5-ECV-02), handled by infrastructure major Larsen & Toubro (L&T), highlights the massive scale of precast operations required for modern metro builds. The 43-acre casting yard manufactured a total of 5,836 precast elements, consuming approximately 120,000 cubic meters of concrete. The yard utilized automated station U-girder mould systems integrated with hydraulic lifting assemblies to maintain uniform structural strength and accelerate production cycles.

The components cast under this project varied significantly to accommodate specific urban geometry, featuring lengths ranging from 8.9 meters to a massive 33.3 meters. The heaviest single U-girder erected during this phase weighed 225 metric tonnes. With the casting phase concluded, engineering teams are focusing entirely on launching the remaining spans and beginning the structural work for the 12 elevated stations included in the segment.

📅 Published on: 08 June 2026

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