Maharashtra has longest Metro rail network under construction: Centre’s data

According to the data released by the Union Ministry of Housing and Urban Affairs, the state has 233-km of Metro railway network under construction including Metro corridors being built in Mumbai, Pune and Nagpur; that is longest in the country when compared to around nine states where Metro corridors are under construction.

http://www.dnaindia.com/mumbai/report-maharashtra-has-longest-metro-rail-network-under-construction-centre-s-data-2649070