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 Boston Globe: MGNA plan for Route 16 stop November 17, 2009 Somerville Journal: Good signs at the State House February 10, 2005 Funding for Route 16 station in jeopardy May 26, 2011