Massachusetts Port Authority - Operates Logan International Airport and other facilities in the Commonwealth. - http://www.massport.com
Massachusetts Turnpike Authority - Operates the Massachusetts Turnpike, an east-west highway from Boston to West Stockbridge on the New York border. - http://www.massturnpike.com/
Massachusetts Water Resources Authority - Provides drinking water and wastewater treatment services to the greater Boston area. - http://www.mwra.state.ma.us
Massachusetts Bay Transportation Authority - Provides public transportation in the greater Boston area. Maps and schedules for commuter rail, and subway service. - http://www.mbta.com