Metro rail, set to become the crucial piece in the jigsaw of the city’s transport network, has been designed to interlink suburban trains, MRTS services and bus stations at Washermenpet, High Court, Chennai Central, Government Estate, Guindy, Saidapet, St Thomas Mount and Airport. In Koyambedu, the metro station will be on the CMBT campus, while at Vadapalani shuttle buses will take commuters to the nearby MTC terminus. Metro rail’s underground station near Chennai Central will be a major hub, linked to the Chennai Central railway station, MMC suburban station, MRTS Park Town station and the Park suburban station. “It will have eight entry and exits. The first floor concourse, one level under Poonamallee High Road, will be the common transit point for people to move to different modes of transport. Metro trains will travel one level below the concourse,” said a metro rail official. Nearly 10 lakh people use Chennai Central, MMC, Park and Park Town MRTS stations daily. A subway from MMC and Central railway station will connect the metro’s station below Poonamallee High Road, while a canopied walkway will be built from its entry or exit to Park suburban station and MRTS station. The Chintadripet MRTS station and Government Estate underground metro station will be linked by a subway so that those wanting to switch to metro trains need not come out of Chintadripet station. “We are building such linkages wherever a metro station is near another public transport facility. In Guindy, the metro station will be adjacent to the suburban railway station where we are planning a foot over bridge linking the two services. We also plan to provide space for city buses to come into the metro station campus at Nandanam while the metro station at the high court will be linked to the MTC terminus and Fort suburban station,” said a senior official. The metro station at the airport, which will have a walkalator connecting the new terminals, will be designed in a way that will allow commuters to access buses. Railways have asked metro to link airport metro station to Tirusulam suburban railway station, opposite the airport. But, the Airports Authority of India is now considering to provide access to the existing subway that connects the airport campus and the railway station. Metro rail is putting up such infrastructure in a bid to allow commuters to travel using a single ticket. A Chennai unified metro transport authority, which is already in place, will work out details of single ticketing for interlinked urban transit network that is expected to become operational by 2016.