Seen here in 1975. Is it still there?http://abpr.railfan.net/abprphoto.cgi?march04/03-23-04/B+M1564atFitchburgMA5-28-75.jpg

Bob, from the Railroad.net B&M/Maine Central forum:"The roundhouse is gone. The turntable is still there; though the pit is mostly filled in with other tracks built on the fill. The table itself is used as part of one of the layover tracks. I believe I made the last spin on that table. We spun a Sperry car in 1987 using a Speedswing to turn the table. The pit was partially filled in soon thereafter."