The City and Industrial Development Corporation (Cidco) has decided to attach its proposed Navi Mumbai Metro rail corridor to Mumbai’s second Metro line at Mankhurd. The MMRDA is already developing Charkop-Bandra-Mankhurd line which will later be extended up to Santa Cruz airport from Bandra. Besides the ongoing suburban rail project between Seawoods and Nhava, Cidco will develop a Metro line up to Uran from Seawoods. This will help the MMRDA as well as the Cidco take both the Metro rail and suburban corridors up to Sewree from Nhava. Cidco chairman Nakul Patil on Thursday announced a Rs 8,000-crore plan to build Metro rail corridor for Navi Mumbai, the planning for which will be done by Delhi Metro Rail Corporation (DMRC). The announcement came close on the heels of MMRDA’s plan to create a Rs 12,000-crore road, rail and bus corridor between Alibaug and Virar via Panvel, Taloja, Kalyan-Dombivili and Bhiwandi. Cidco has already spent over Rs 200 crore for setting up infrastructure for the proposed suburban rail line from Seawoods up to Uran. Patil also revealed that the Cidco’s board of directors have decided to develop a 57-km long Metro corridor with three lines. The estimated cost of developing the corridor is Rs 140 crore per km, he said. The first Metro will be a 24-km elevated stretch starting from Belapur. The second 19-km corridor will stretch from Seawoods to Panvel via Kharkopar, international airport area, Ranjanpada and Uran. The third 14 km Metro line will start from the proposed Navi Mumbai airport in Panvel and go up to Mankhurd via Ulve, Nerul and Vashi.