Demolition on the first of three Somerville bridges being rebuilt for the Massachusetts Bay Transportation Authority’s $2.3-billion Green Line Extension was slated to begin March 23.
Service resumed on March 18 for the Boston MBTA Blue Line following disruption from a fire that raged for two days at an East Boston casket company, forcing evacuation of 150 homes.
The Massachusetts Bay Transportation Authority management board approved a $217.7 million contract to upgrade and modernize the signal systems on two MBTA subway lines.