Until the end of September 1917, the D&H used the connection over the Grand Trunk Railway's Victoria Bridge into Bonaventure Station.

At Delson a junction also exists with the Canadian Pacific Railway (CPR) via the St. Lawrence Bridge into Windsor Station, used by the D&H from October 1, 1917[2] until the end of passenger service in 1971, and by Amtrak's Adirondack between 1974 and 1986.

Starting in 1967, the Napierville Junction Railway had two MLW RS-2 locomotives and 4 cabooses which served to pull consists from Upper New York State to Montreal, QC.

From customs to maintenance this was the NJR's operating office, which then led to the Delaware and Hudson headquarters in Albany, NY.

[3] The Napierville Junction Railway's line between Rouses Point and Delson is called the Lacolle Subdivision.