with paved shoulders. Phase V: As road traffic increases over time, a number of four-lane highways will need to be upgraded/expanded to six lanes. On 5 October 2006 the government approved for upgrade of about of four-lane roads. Phase VI: The government is working on constructing expressways that would connect major commercial and industrial townships. It has already identified of Vadodara (earlier Baroda)-Mumbai section that would connect to the existing Vadodara (earlier Baroda)-Ahmedabad section. The World Bank is studying this project. The project will be funded on BOT basis. The Expressway between Chennai—Bangalore and Expressway between Kolkata—Dhanbad has been identified and feasibility study and DPR contract has been awarded by NHAI. Phase VII: This phase calls for improvements to city road networks by adding ring roads to enable easier connectivity with national highways to important cities. In addition, improvements will be made to stretches of national highways that require additional flyovers and bypasses given population and housing growth along the highways and increasing traffic. The government has planned to invest Rs. 16,680 Cr for this phase. The long Chennai Port—Maduravoyal Elevated Expressway is being executed under this phase. Note: 1 crore= 10 million Status from NHAI website National Highways Development Project is being implemented in all phases. The present phases are improving more than 49,260 km of arterial routes of NH network to international standards. The project-wise details of NHDP all phases is below as of 18 May 2021: Subsummation in Bharatmala project National Highway Development Project will close by first half of 2018, with the launch of Bharatmala project. 10,000 km of highway construction left under NHDP will be merged with Phase I of the Bharatmala. See also Similar rail development Future of rail transport in India, rail development Similar roads development Bharatmala Diamond Quadrilateral, Subsumed in Bharatmala Golden Quadrilateral, completed national road development connectivity older scheme North-South and East-West Corridor, Subsumed in Bharatmala India-China Border Roads, Subsumed in Bharatmala Expressways of India Setu Bharatam, river road bridge development in India Similar ports and river transport development Indian Rivers Inter-link List of National Waterways in India Sagar Mala project, national water port development connectivity scheme Similar air transport development Indian Human Spaceflight Programme UDAN, national airport development connectivity scheme Highways in India List of National Highways in India by highway number List of National Highways in India General Transport in India References External links "Rs. 3.2 trillion for infrastructure