Somerville celebrates the Green Line! Post published:December 18, 2022 Post category:Green Line Somerville High School was full of joy and gratitude yesterday as the community celebrated the opening of the full Green Line Extension! You Might Also Like Somerville Journal: Green Line options September 30, 2004 Boston Globe: Orange & Green Line updates February 13, 2011 Transportation bill means money for Somerville August 10, 2005