Accelerating the rail network building process in the Mumbai metropolitan city, Indian Railways has chalked out a plan to invest Rs 40,000-cr in different projects in Mumbai, blueprint of which will be prepared before August 15, railway sources said, claiming that the foundation stone laying ceremony of a FOB (Foot Over Bridge) at suburban Khar railway station was held in the city recently. The Centre and the state government will collaborate to implement some of the big projects in the megapolis like elevated corridors between Chhatrapati Shivaji Terminus and Panvel; Churchgate-Virar, and they will be completed in two phases. Outlining the Rail Minister priority to turn Indian railway into a world-class transport medium, ministry sources said that it will invest money through some extra budgetary resources.