Portland Company locomotive Coos c. 1856
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Reporting mark | SLR |
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Locale | western Maine, northern New Hampshire, northeastern Vermont |
Dates of operation | 1853– |
Track gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge |
Previous gauge | , 5 ft 6 in (1,676 mm) broad gauge until about 1873 |
Headquarters | Auburn, Maine |
Website | GWRR.com |
Reporting mark | SLQ |
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Locale | South Quebec |
Track gauge | 4 ft 8 1⁄2 in (1,435 mm) standard gauge |
Headquarters | Richmond, Quebec |
Website | GWRR.com |
The St. Lawrence and Atlantic Railroad (reporting mark SLR), known as St-Laurent et Atlantique Quebec (reporting mark SLQ) in Canada, is a short line railway operating between Portland, Maine on the Atlantic Ocean and Montreal, Quebec on the St. Lawrence River. It crosses the Canada–US border at Norton, Vermont, and is owned by short line operator Genesee and Wyoming.
The line was built by the Atlantic and St. Lawrence Railroad in the U.S. and the St. Lawrence and Atlantic Railway in Canada, meeting at Island Pond, Vermont south of the Canada–United States border. Major communities served include Portland and Lewiston in Maine; Berlin, New Hampshire; Island Pond, Vermont; and Sherbrooke and Montreal in Quebec.
The line was proposed as a connection between Portland and Sherbrooke, Quebec in 1844 by Portland entrepreneur John A. Poor. Portland was desperate to connect its ice-free port with Montreal, and Maine was at risk of being eclipsed by a similar proposal running from nearby Boston, Massachusetts. Montreal saw an advantage in linking with the smaller port at Portland and Poor's idea became a reality.