CHENNAI: The Chennai Metro Rail Limited (CMRL) has achieved a major milestone by casting the final U-girder for the double-decker portion of Corridor-4 (Lighthouse to Poonamalle bypass).

This marks the completion of 100% pre-cast works at the Voyalanallur Casting Yard and a major work completion in viaduct (bridge like structures) construction between Porur to Powerhouse CMRL Phase II, Corridor-4.

According to a press release, this has been made after overcoming several engineering and logistical challenges in one of the most complex stretches of the Phase II network. A total of 3,410 precast elements comprising 25 different types of pre-stressed (both pre-tensioned and post-tensioned) members, including U-Girders, I-Girders, Pier Caps, Pier Arms, and Parapets, have been successfully ca

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