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NHAI to build 5-km long twin-tube tunnel in South Delhi

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NHAI to build 5-km long twin-tube tunnel in South Delhi

By August, the National Highways Authority of India will request bids for the building of a 5-kilometer twin-tube tunnel connecting Nelson Mandela Road in Vasant Kunj to NH-8 near Shiv Murti, costing 2,000 crore. It would provide a smooth ride to Terminal 3 of the New Delhi airport.

The tunnel, which will be built utilising tunnel boring machines, will constitute a 4-kilometer part of the overall 5-kilometer connectivity project (TBMs). The tunnel would be 13.8 metres in diameter and equipped with electromechanical, ventilation, fire, and safety equipment. It will be built in a twin-tube layout with three lanes in each tunnel, one for up traffic and the other for down traffic, with cross passes and laybys every 500 and 750 metres, respectively, and will be completed in four years from the start of construction.

Those travelling towards Gurgaon can take the left turn to join the expressway, while those heading towards Manesar or Chandigarh can easily transfer to the forthcoming Dwarka Expressway. Similarly, vehicles heading towards T-3 can turn right from the intersection and drive straight to the airport. The initiative would also help to decongest Mahipalpur Road, which is notorious for its heavy traffic during the day. The proposed tunnel is a greenfield alignment that will give a direct link from Munirka and Vasant Vihar to the Gurgaon and Dwarka expressways. It will travel through Westend Green and across the Rangpuri Ridge.

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