The STL&H (St. Lawrence and Hudson) railway arose out of a corporate reorganization at Canadian Pacific Railway that was announced on November 21, 1995. CPR wished to spin off its "eastern operating unit" into an operating railway company as a means to control poor financial performance of its assets in eastern North America.
An experimental intermodal service known as the ''Iron Highway'' is an apparent winner in Canada as the St. Lawrence & Hudson Railway, a subsidiary of Canadian Pacific Railway Co., announced plans to expand the service now operated between Toronto and Montreal.
The Iron Highway suffered a different fate in the United States when CSX Corp. discontinued its service in 1996 after spending millions to develop and test the technology, intended to offer a smoother ride and faster terminal handling, carries freight on a continuous platform without couplers between the individual cargo-carrying units that are used on conventional rail equipment.
Loading and unloading is done on a ramp that is part of the platform assembly.
The StL&H St. Lawrence and Hudson Railway track plan courtesy of Paul Duncan.