MBTA awards construction contract to SCR Constructors for South Coast Rail, US August 25, 2020 | North America News The Massachusetts Bay Transportation Authority (MBTA) has awarded a USD403.5 million contract to SCR Constructors (joint venture of The Middlesex Corp and Tutor Perini) for the second of the two princ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password