To clarify: it used to be possible to transfer from the Blue Line (serving the airport and parts of the north shore) to the Green Line (serving much of the inne

To clarify: it used to be possible to transfer from the Blue Line (serving the airport and parts of the north shore) to the Green Line (serving much of the inner metro west) at a single stop — Government Center, which is now closed for renovations. For the next couple of years, getting from the airport or north shore to metro west is a Blue > Orange > Green transfer, which is definitely much more of a hassle. It would have been nice for them to leave a corridor open between the Green & Blue trains at Gov't Center, but then you'd have the liability of people walking around inside a construction zone. I've never been happier that I work in Watertown. Edit: the blue line does not serve Charlestown. Brain fart.