The central government has cleared the extension of the metro line from Washermenpet to Wimco Nagar in Tiruvottiyur in north Chennai area of Tamil Nadu entailing an investment worth Rs. 3,770cr. The 9-km extension will have two underground and seven elevated stations and would enable Metro rail services to the densely populated neighborhoods of northern parts of Chennai, Chief Minister, Jayalalithaa, said adding that Chennai has been growing rapidly and traffic volumes have increased manifolds and that it is the intention of the state government to promote public transport of various forms including metro rail to ensure that the share of public transportation in Chennai city is substantially increased and the expansion of the metro line will benefit the local masses to a greater extend, she claimed.