"2" . . "Dorchester, Boston,Massachusetts" . . "Blue Hill Avenueat Woodhaven Street" . "290" . "2019" . . . . "true" . . . ",,," . "Mattapan (previous station)" . . "Blue Hill Avenue station" . "1944" . "1island platform" . . "1944-03-12" . . . "Blue Hill Avenue" . . . . . . "2019" . "1855" . . . . "Blue Hill Avenue station" . "2019-02-25" . . . "Blue Hill Avenue station#History" . . "1A" . "1855" . . .