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 Green Line extension roundup: Anxiety, anger, and hope August 29, 2015 Green Line letters from legislative delegation September 22, 2011 Updates to Somerville bridge closures January 29, 2020
