The Lake Ontario State Parkway is a 56.41 kilometer (35.05 mile) parkway (commercial pedestrian highway) that runs along Lake Ontario's western New York coast. This parkway is designated by the New York State Department of Transportation as New York State Road 947A (NY 947A). The short, 0.89-kilometer (0.55 mile) connecting road between the parkway's western end point and NY 18 is New York State Road 948A.

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