New Delhi - The Ministry of Road Transport and Highways plan to build 74 new tunnels stretching 273 km at a cost of Rs 1,00,000 crore over the next few years as part of its mega plan to strengthen India’s highway network while ensuring regular performance audits of all under construction projects, road minister Nitin Gadkari said.

Speaking at the second edition of Tunnelling India conference by the Federation of Indian Chamber of Commerce and Industry (Ficci) on Tuesday, Gadkari underlined technology upgradation and cost-effective solutions to tackle the unique challenges . . .