L&T has emerged as the lowest bidder for three packages — KMC to Royapettah, Radhakrishnan Salai to Adyar Junction and Adyar Depot to Taramani Link Road. Tata Projects is the lowest bidder for Madhavaram to Perambur stretch stations and DRA Infracon for Ayanavaram to Kellys stretch.
The reason for awarding contracts on multiple packages is to ensure that they do not depend on a single contractor. If the contractor fails to meet deadlines and the pace of work is slow, the whole stretch should not get affected. The 29 underground stations would come up on the 26.7-km Madhavaram-Taramani stretch of corridor 3 which runs for a total distance of 45.81 km with 50 stations. This is a part of the 118.9 km phase II project that comprises three corridors — Madhavaram to Sholinganallur, Madhavaram to SIPCOT and Poonamallee to Light House.