CHENNAI (Metro Rail News): Chennai Metro Rail Ltd. (CMRL) yesterday opened technical bids for constructing around 42 km long tunnels works. Four out of Eight firms have qualified for the Chennai Metro’s new 45.81 km Line-3 (Madhavaram – SIPCOT) after evaluation of technical bids.
These tunnels on the Line-3’s 26.7 km underground section in the 118.9 km Phase 2 project will be built as part of a 52.01 km prioritized sub-project which will first see the development of Line-3 between Madhavaram – Sholinganallur and Line-5 between Madhavaram – CMBT.
CMRL had invited tenders for both packages in January 2020 with estimates of approximately Rs 1800 crore and 2500 crore according to news reports with a deadline of 1460 days to finish all civil works.
Gulermak Agir Sanayi Insaat ve Taahhut A.S.(Gulermak), Larsen and Toubro Limited (L&T), Shanghai Tunnel Engineering Co (Singapore) Pte Ltd and Tata Projects Ltd. (TPL) are participating in the bid process.
Scope of the work for TU01 includes Construction of approximately 9 km twin bored tunnels (total = 18 km) from the TBM Retrieval Shaft near Venugopal Nagar (of Line-5) to Kellys Station, and the construction of diaphragm walls, entry/exit structures of Madhavaram Milk Colony Station, Murari Hospital Station, Ayanavaram Station and Purasaiwakkam High Road Station, including launching and retrieval shafts at the above stations.
Scope of works under TU02 includes Construction of approximately 12 km twin bored tunnels from Kellys Station to Taramani Road Junction and the construction of diaphragm walls, entry/exit structures of Chetpet station, Royapettah Government Hospital Station, Thiruvanmiyu Station, and part diaphragm wall of Greenways Road Station, including launching and retrieval shafts at the above stations.