The Indian Government is set to upgrade 3,700km of national highways under the National Highways Interconnectivity Improvement Project.

The project will cost INR200bn ($1.3bn) and will involve the double-laning of single-lane highways in eight states over the next three years, according to business-standard.com.

The Indian Ministry of Road Transport and Highways is expected to carry out work on the project, for which 33 stretches of road have been identified.

A government official said the World Bank will finance 80% of the project while the Indian Government will provide the rest.

The project is intended to help the government achieve its target of constructing 20km of road every day.