Of the projects, six are 2,250 km expressways to be built at a cost of Rs 1.45 trillion.
The remaining 16 are greenfield corridors, including 5,250 km projects to be constructed at a cost of Rs 1.65 trillion Besides Delhi Mumbai Expressway, the minister said the trans-Rajasthan and trans-Haryana projects will be completed within the next three years.
About Delhi Mumbai Expressway, he said greenfield alignment has been selected to avoid habitation and optimise cost of land acquisition.
"We have saved about Rs 16,000 crore on land acquisition front alone as land could be acquired at a cost of Rs 80 lakh per hectare for the project," he said, adding that the expressway will unlock new economic opportunities in hinterland districts of Haryana, Rajasthan, Madhya Pradesh and Gujarat.
The expressway has been taken from concept to award in a record time-frame of less than a year.
He said the new projects will provide alternate routes to diversify traffic, improve geometry/alignment and provide connectivity for major towns, thereby reducing distance and travel times Besides, these will mitigate issues like land acquisition, utility shifting and other clearances related to brown-field expansion of existing alignment and provide thrust to the economy of backward regions by improving infrastructure, the minister said.