From time to time, a public transit enthusiast posts a map online showing a hypothetical expansion of the Massachusetts Bay Transportation Authority. Discussion ensues.
Green Line service out to Watertown and Waltham? A Blue Line that stretches to Lynn? A new train line looping a ring around Boston and connecting the MBTA to communities such as Chelsea? Imagine the possibilities.
Perhaps someday, portions of those designs will become reality. But for now, there are more immediate challenges, Phillip Eng, MBTA General Manager and interim Massachusetts Transportation Secretary, told MassLive…