<Tr> <Td_colspan="2"> Services that will use the line through Midtown Manhattan will be colored turquoise . The T will serve the entire length of the Second Avenue Subway as soon as Phase 3 is opened . The Q serves the line between 72nd Street and 96th Street . Limited rush - hour N trains and one R train also serve the line between 72nd Street and 96th Street . </Td> </Tr> <Tr> <Th_colspan="2"> Overview </Th> </Tr> <Tr> <Th> Type </Th> <Td> Rapid transit </Td> </Tr> <Tr> <Th> System </Th> <Td> New York City Subway </Td> </Tr>

When will the second avenue subway be completed