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New York State Route 345

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New York State Route 345 marker

New York State Route 345
Map of northern St. Lawrence County with NY 345 highlighted in red
Route information
Maintained by NYSDOT and the village of Potsdam
Length 17.87 mi[2] (28.76 km)
Existed 1930[1] – present
Major junctions
South end US 11 in Potsdam
North end NY 37 in Waddington
Counties St. Lawrence
Highway system
NY 344 NY 346

New York State Route 345 (NY 345) is a state highway located entirely within St. Lawrence County in the North Country of New York in the United States. It is a north–south route connecting the towns of Waddington and Potsdam by way of the town of Madrid. The southern terminus of NY 345 is at an intersection with U.S. Route 11 (US 11) in the village of Potsdam. Its northern terminus is at a junction with NY 37 in the village of Waddington by the St. Lawrence River.

NY 345 was assigned as part of the 1930 renumbering of state highways in New York; however, it originally followed a different alignment south of the hamlet of Madrid. At the time, what is now NY 345 between Madrid and Potsdam was part of NY 56A. The NY 56A designation was eliminated in 1980. NY 345 was realigned two years later to follow old NY 56A to Potsdam as a result of a highway maintenance swap between the state of New York and St. Lawrence County. Ownership and maintenance of NY 345's original routing south of Madrid was transferred from the state to the county and the village of Canton as part of the exchange.

Route description[edit]

NY 345 crossing the CSX St. Lawrence Subdivision in Potsdam

NY 345 begins at an intersection with US 11 in the village of Potsdam, just north of Clarkson University. The route heads northwestward on Pine Street and Madrid Avenue as a village-maintained, state-numbered highway,[3] crossing the CSX Transportation-owned St. Lawrence Subdivision by way of a grade crossing as it heads through a commercial and residential area.[4] It exits the village shortly afterward, at which point the route becomes maintained by the New York State Department of Transportation.[3] It heads northwestward on a linear path through the town of Potsdam, passing through mostly undeveloped areas comprising open fields and forests. NY 345 curves slightly northward at Burnham Corners before crossing Trout Brook and entering the town of Madrid, where it traverses the New York and Ogdensburg Railway by way of a grade crossing just outside the hamlet of Madrid.[4]

The highway continues into the community, where the route becomes Bridge Street and intersects NY 310 on the eastern bank of the Grasse River. It continues across the river to Main Street, at which point NY 345 turns to the northeast and follows Main Street out of the hamlet. North of Madrid, NY 345 curves back to the northwest as it enters another rural area. It passes by the isolated Madrid–Waddington Central School just before crossing into the town of Waddington. The rural surroundings continue to the village of Waddington, where the amount of development along the route increases after the highway crosses Sucker Brook south of the village center. NY 345 ends shortly afterward at an intersection with NY 37 in the village center near the southern bank of the St. Lawrence River.[4]


When NY 345 was assigned as part of the 1930 renumbering of state highways in New York, it began at US 11 in Canton. From there, NY 345 followed modern County Route 27 (CR 27) and CR 14 north to Madrid, where it joined its modern alignment north to Waddington. At the same time, the current alignment of NY 345 from modern NY 310 in Madrid to Potsdam was designated as the southern half of NY 56A.[1][5] The short piece of Bridge Street not part of NY 56A in Madrid was a state-maintained reference route.[6]

On April 10, 1980, the NY 56A designation was deleted.[7] The portion of former NY 56A from Madrid to Potsdam, as well as the state-maintained Bridge Street connector, became part of a rerouted NY 345 on September 1, 1982, as a result of a highway maintenance swap between the state of New York and St. Lawrence County. As part of the swap, the pre-1982 routing of NY 345 between the Canton village line and Bridge Street in Madrid was turned over to the county while the portion of former NY 345 within Canton was transferred to the village.[8][9]

Major intersections[edit]

The entire route is in St. Lawrence County.

Location mi[2] km Destinations Notes
Village of Potsdam 0.00 0.00 US 11
Madrid 8.54 13.74 NY 310
8.89 14.31 CR 14 Former routing of NY 345
Village of Waddington 17.87 28.76 NY 37
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also[edit]


  1. ^ a b Dickinson, Leon A. (January 12, 1930). "New Signs for State Highways". The New York Times. p. 136. 
  2. ^ a b "2008 Traffic Data Report for New York State" (PDF). New York State Department of Transportation. June 16, 2009. p. 296. Retrieved December 9, 2009. 
  3. ^ a b "St. Lawrence County Inventory Listing" (CSV). New York State Department of Transportation. March 2, 2010. Retrieved December 29, 2010. 
  4. ^ a b c Google (December 23, 2009). "overview map of NY 345" (Map). Google Maps. Google. Retrieved December 23, 2009. 
  5. ^ Road Map of New York (Map). Cartography by General Drafting. Standard Oil Company of New York. 1930. 
  6. ^ Morley Digital Raster Quadrangle (Map). 1:24,000. New York State Department of Transportation. 1969. Retrieved December 23, 2009. 
  7. ^ New York State Department of Transportation (January 2017). Official Description of Highway Touring Routes, Bicycling Touring Routes, Scenic Byways, & Commemorative/Memorial Designations in New York State (PDF). Retrieved January 9, 2017. 
  8. ^ New York State Legislature. "New York State Highway Law § 341". Retrieved December 29, 2010. 
  9. ^ New York (Map). Rand McNally and Company. 1985. ISBN 0-528-91040-X. 

External links[edit]

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