As expected, Afcons Infrastructure has been awarded the contract to complete the balance tunneling work of the long delayed UAA-02 section of Chennai’s Metro between the May Day Park shaft and AG-DMS station! The Chennai Metro Rail Ltd. had initially invited bids for this critical section in August 2015, but didn’t follow through with awarding the contract to Afcons for “technical reasons“. After that, they invited separate bids for station and tunnel works in December 2015 for which L&T and Afcons emerged as the sole bidders respectively in April .
This 4.5 km section of the 32.10 km Wimco Nagar – Chennai Airport line starts at the May Day Park shaft, includes 3 stations at Government Estate, LIC, Thousand Lights and finally ends at the AG-DMS shaft. The original contractor of this package, a JV between Gammon-Mosmetrostroy, had abandoned tunneling work in May 2015 after completing only 1835m and 1700m of the 3616m long twin tunnels.
The Gammon – Mosmetrostroy JV had also abandoned the UAA-03 section between AG-DMS & Saidapet, but luckily tunneling works were almost complete. Afcons Infra was temporarily roped in to complete the last breakthrough in September 2015 and L&T was tasked with completing the balance civil work at all stations which have been progressing satisfactorily – See: Chennai Metro’s April Newsletter.
As per a CMRL official who interviewed with The Hindu:
It was finalised last week soon after the elections. The tunnelling work has to be finished in 10 months. The work will start in a few weeks as man power has to be organised and the equipment have to be recommissioned.
Gammon-Mosmetrostroy’s subcontractors were recently allowed to remove their machinery, tools & other equipment, but their TBMs are still lying underground. With a tight deadline to complete pending works, Afcons will most probably utilize those TBMs to complete the balance works instead of removing them & lowering their own.
For more updates, check out the Chennai section of The Metro Rail Guy!