Maine Eastern Railroad does at the end of their Rockland run there sits a small shop with a turntable.
Morristown & Erie started freight service in Maine in 2003 as Maine Eastern Railroad, this was followed by passenger service in 2004 between two coastal towns with stops at two other coastal towns.
I was across the street from the yard in Rockland this past August, got to look at trains while my wife did the quilt shop thing.