According to Mumbai Metropolitan Region Development Authority (MMRDA), only two companies have placed bids to build the Thane-Borivali twin tunnel of 11.84km each.
Larsen & Toubro (L&T) and Megha Engineering & Infrastructures Ltd are in the fray to bag the project, which will drastically shorten the travel time between the two suburbs.
This project will feature 2 x 10.8 km road tunnels under Sanjay Gandhi National Park (SGNP) and a combined 1 km of approach roads on both ends.
Each of the tunnels will have three lanes, totalling to six lanes, along with interconnecting tunnels for emergency purposes.
The tunnels will be built using 4 mega tunnel boring machines (TBMs) at a maximum depth of 23m below the surface and connect Magathane’s Ekta Nagar in Borivali and Tikuji-Ni-Wadi at Manpada in Thane.
Currently, by road, it takes over an hour to cover 24km from Magathane to Tikuji-Ni-Wadi. Once this tunnel is operational, the travel time will reduce to just around 15 minutes.
The process to scrutinise the technical submissions has begun, which is expected to go on for the next few days. Once done, the financial bid will be opened to decide on the company that has submitted the lowest quotation to build 23.68km of roads inside the tunnels and another 2km of approach roads.
The infrastructure work has been split into two packages – construction of twin tunnels from Borivali up to 5.75km, and 6.09km of each of the twin tubes from the Thane end.
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