The project is a part of Japan's infrastructure investment in India.
The approval included a R2,015.60-crore scheme for widening of the Patna-Gaya-Dobhi section in Bihar and a R3,636.43-crore project for the Baharagora-Sambalpur stretch in Orissa and Jharkhand, an official statement said.
The four-laning of the Patna-Gaya-Dobhi section on NH-83 in Bihar is done with loan assistance from Japan International Cooperation Agency (JICA), the statement said about the Bihar project.
It said the widening of the 127-km stretch, a part of the Buddhist Circuit, which also serves as link road for the proposed world-class international Nalanda University at Rajgir, entails a total capital cost of R2,015.60 crore, including cost of civil construction, supervision works, land acquisition, rehabilitation and pre-construction activities.
The Japanese government is ready to fund the project that takes off from NH-30 at Patna and ends at junction of NH-83 and NH-2 (Golden Quadrilateral) at Dobhi through JICA loan. It will be completed within three years of the signing of agreement. JICA has already agreed to provide loan assistance with 100% financing for civil construction and supervision work for the implementation of four laning of the Patna-Gaya-Dobhi Project.