Pan Am Railways, Inc. (PAR) is a subsidiary of CSX Corporation that operates Class II regional railroads covering northern New England from Mattawamkeag, Maine, to Rotterdam Junction, New York.

[10] The next month, Timothy Mellon made an offer of $500,000 for the entirety of the D&H's stock, which was identical to the amount the Norfolk and Western had paid to buy the D&H in 1968.

Both the D&H's directors and Norfolk and Western accepted the offer, in part to remove a potential obstacle to the pending merger between the N&W and the Southern Railway.

A 2008 report issued by the American Society of Civil Engineers rated Maine at 48th of the 50 states in volume of freight traffic that moves by rail.

[15] When their planned western expansion fell through, with few prospects for growing freight traffic, and two intense labor strikes, Guilford filed the D&H for bankruptcy and disbanded the company, in June 1988.

By an Interstate Commerce Commission emergency order, New York, Susquehanna and Western Railway provided service under subsidy until the line was sold to Canadian Pacific in 1991.

[16] Then in March 2009, PAR was ordered to pay the largest corporate criminal fine in Massachusetts history — $500,000 — due to the company's negligence to report a spill of hundreds of gallons of diesel fuel in violation of state and federal environmental laws and regulations.

[19] On May 15, 2008, NS announced that it had come to an agreement with PAR to "create an improved rail route between Albany, New York, and the Boston, Massachusetts, region, named the Patriot Corridor.

[24] In March 2012, the Federal Railroad Administration awarded a $2-million grant to the Massachusetts Department of Transportation for preliminary engineering on removing 19 obstacles to allow double stack container trains to use the Patriot Corridor route.

[28] On April 30, 2021, CSX submitted a 478-page plan of purchase outlining a broad range of topics, from implementations of track upgrades to the controversial issue of Norfolk Southern intermodal routing, as well as the fate of Pan Am's hodgepodge fleet of aging motive power, which is made up of EMD and GE locomotives from railroads such as Conrail, NS, CSX, the Milwaukee Road, and Kansas City Southern.

The Hoosac 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.

[35] PAR's mainline ran from Mattawamkeag, Maine, to Mechanicville, New York, via the lines of the following former companies: Media related to Pan Am Railways at Wikimedia Commons