Mumbai's ambitious metro rail project today received a shot in the arm with the Centre announcing the sanctioning of Rs 4,500 crore for its completion. "Chief Minister Vilasrao Deshmukh had requested for funds from the Centre. The Centre is sanctioning Rs 4,500 crore as viability gap funding for the Mumbai Metro Rail Project (MMRP),' Union Urban Development Minister Jaipal Reddy said. The Centre had already agreed in-principle to provide the viability gap funding for the Rs 22,000-crore project being implemented by the MMRDA. Viability gap funding is the fund given by the government to infrastructure projects that are not commercially viable but have high economic benefit. The main objective of metro rail project is to provide a rail-based mass transit connectivity to people and to serve the areas not connected by the existing suburban rail system. The phase I of the project includes construction of three corridors