Green Line bridge construction underway Post published:May 6, 2013 Post category:Green Line Phase I work is underway, including utility work and excavation support work northeast of Harvard Street Bridge in Medford. You Might Also Like Somerville Journal: First Green Line Advisory Group meeting October 31, 2007 Video of potential Green Line route March 5, 2008 Critical Green Line meeting June 22! June 18, 2005