Green Line maintenance facility and air rights Post published:October 9, 2008 Post category:Green Line Somerville News: “Up in the air! It’s the city’s development future” You Might Also Like Green Line Environmental Impact Report delayed again September 20, 2009 The rest of the Green Line opens Monday! Here’s where to celebrate December 8, 2022 Very bad news: State announces huge delay of Green Line extension to 2018-2020! August 1, 2011