Mumbaikars have news to cheer for. Mumbai Metro Rail Corporation will begin the third line of metro i.e. Colaba- Bandra- Seepz form October. Mumbai Metro Rail Corporation has signed an agreement with four contractors said Ashwini Bhide, MD, MRCC. The overall budget of this project is 18,114 crore and 9 lakhs. Line 3 of Mumbai Metro will be the first underground metro line of 33.5 km.