. "1island platform(Green Line)" . "Prospect Street south ofUnion Square" . . "2" . "2022-03-21" . . "120 spaces" . . . . "MBTA bus:,,,," . "3645" . "Union Square station (Somerville)" . "Union Square station" . "Union Square station (Somerville)#Railroad station" . "true" . "Webster Street" . . "Union Square station (Somerville)" . "Union Square" . . "Union Square station (Somerville)#History" . . "2022" . "Somerville, Massachusetts" . . .