Mondays MassDOT meeting had this line item, but I can't for the love of me figure out what project it's actually referring to, as docs haven't been posted yet. The only garage I can think of out that way that would require MassDOT approval is Clarendon St by Back Bay Station.
Hancock Garage West Tower (Back Bay) Air Rights Project Enabling Work
Hancock Garage West Tower (Back Bay) Air Rights Project Enabling Work