MUMBAI: Union Minister Nitin Gadkari today said the Centre is planning to invest Rs 3 lakh crore on infrastructure development in Maharashtra over the next three years."I am assuring the Chief Minister that we will complete investment of more than Rs 3 lakh crore within next three years in Maharashtra and we will change the basic infrastructure of the state," the Minister for Road Transport and Highways said at the ongoing Make in India Week here.He also said that around Rs 68,000 crore of road projects will be completed in the state by December.Gadkari, a MP from Nagpur, added that the length of National Highways in the state has been increased three fold to 22,442 kms.He further said that the new greenfield port at Wadhawan near Dahanu will be completed in three years.Earlier this year, Gadkari had said that a total of Rs 2 lakh crore will be spent on expanding as well as building new roads in Maharashtra in next five years."At present, Rs 20,000 crore is sanctioned for various road development projects in Konkan area of the state alone," he had said.