According to a press note from CMRL, this specific stretch includes five single-decker and four double-decker stations, requiring a total of 2,255 piles to support the structure and transfer the load to the ground.

CMRL faced several challenges during the piling process, such as diverting 24.45 kilometres of utilities and redesigning pile layouts to safeguard critical infrastructure, including a 1,200 mm water line. A major achievement was the successful diversion of a 1,500 mm water line without disrupting the water supply, as mentioned in the press note.

The Phase II construction of the Metro Rail is progressing rapidly, with work on the elevated line moving ahead of the underground line.

Corridor 4 spans 26.1 kilometres between Light House and Poonamallee Depot. Being a priority corridor, CMRL plans to open the first segment of Phase II, from Poonamallee to Porur Junction, by December 2025.