CSX’s use of newer line-haul and switching locomotives, compared to Pan Am’s locomotives." The combination of several trackage rights agreements in the approved plan will create a new route allowing Norfolk Southern to move double-stack intermodal trains and automobile trains from Voorheesville, New York to Ayer, Massachusetts (the Southern Route). The Hoosic Tunnel on the Pan Am Southern (the Northern Route), used by NS prior to this agreement, is too low for double-stack trains. Berkshire & Eastern Railroad (B&E), a wholly owned subsidiary of Genesee & Wyoming (G&W), will replace Springfield Terminal as the operator of Pan Am Southern. CSX made specific commitments in its filings and entered into settlement agreements with numerous parties that had initially raised concerns about the transaction. Routes PAR's mainline ran from Mattawamkeag, Maine, to Mechanicville, New York, via the lines of the following former companies: MEC: European and North American Railway, MEC mainline B&M: B&M mainline, Lowell and Andover Railroad Boston & Lowell Railroad: Nashua & Lowell Railroad, Stony Brook Railroad Fitchburg Railroad: Fitchburg Railroad mainline, Vermont & Massachusetts Railroad, Troy and Greenfield Railroad, Southern Vermont Railroad, Troy & Boston Railroad, Boston, Hoosac Tunnel & Western Railway References External links Pan Am Railways photographs - NERAIL Photo Archive Guilford Rail Systems photographs - NERAIL Photo Archive United States railroad holding companies Regional railroads in the United States Norfolk Southern Railway CSX Transportation Companies based in Billerica, Massachusetts Maine railroads New Hampshire railroads Defunct Massachusetts railroads Connecticut railroads New York (state) railroads Vermont railroads Railway companies established in 1981 American companies established in 1981 Announced mergers and acquisitions 2022 disestablishments in Massachusetts