The MBTA Red Line Emergency Repairs The Massachusetts Bay Transportation Authority (MBTA) is the operator of the Red Line Subway in Boston, MA. By shotcreteweb|2022-02-16T16:59:49+00:00January 9th, 2008| Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail About the Author: shotcreteweb