Details on Green Line retaining walls and noise barriers Post published:May 30, 2012 Post category:Green Line MassDOT has posted its presentation on retaining walls and noise barriers, from the May 22 public hearing. You Might Also Like Medford Transcript: Medford sues too February 3, 2005 Here’s the kind of economic growth the Green Line can bring February 20, 2017 Board approves Green Line builder November 20, 2017