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 Rep. Capuano asks Somerville to give up and not fight for the entire Green Line February 1, 2012 Feasibility studies for future Community Path connections June 20, 2020 Cambridge Chronicle: Lechmere station moving October 12, 2006