The Delhi–Mumbai Expressway is a 1,350 km long, 8-lane wide (expandable to 12) under-construction access-controlled expressway connecting India's national capital New Delhi with its financial capital Mumbai. The under-construction Vadodara–Mumbai Expressway has been subsumed in this project. Foundation stone of the project was laid by union minister Nitin Gadkari in presence of Sushma Swaraj & Arun Jaitley on 8 March 2019. An additional 30 km long spur will also be constructed by the NHAI from Noida International Airport in Jewar to Ballabgarh on this expressway. Upon completion in March 2023, it will become India's longest and busiest expressway, as well as the world's longest expressway.
Initially, the expressway will be 8-lane wide with the greenfield-alignment route in backward areas, which will reduce the current 24 hours travel time to 12 hours. This expressway, along with Western Dedicated Freight Corridor (Western DFC) will be a vital backbone of the Delhi–Mumbai Industrial Corridor.
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