What follows is the text of a memorandum sent to the Hemlock Gorge Reservation Site Supervisor by the Massachusetts Water Resources Authority (MWRA) that Echo Bridge will be closed temporarily to pedestrians. MWRA Press Release FOR IMMEDIATE RELEASE: March 6, 2006 CONTACTS:Ria Convery, 617-788-1105 [email protected] ECHO BRIDGE CLOSED TO PEDESTRIAN TRAFFIC Handrails a danger to…