New York State Route 18

New York State Route 18
New York State Route 18
	Map of western New York with NY 18 highlighted in red
Route information
	Maintained by NYSDOT, Monroe County and the city of Rochester
Length	87.40 mi (140.66 km)
Existed	1924–present
Tourist; routes	Great Lakes Seaway Trail
Major junctions
West end	NY 104 in Lewiston
	Niagara Scenic Parkway in Youngstown; NY 78 in Olcott; Lake Ontario State Parkway in Carlton; NY 390 in Greece;
East end	NY 104 in Rochester
Location
Country	United States
State	New York
Counties	Niagara, Orleans, Monroe
Highway system
	New York Highways; Interstate; US; State; Reference; Parkways;

New York State Route 18 (NY 18) is an east–west state highway in western New York in the United States. It runs parallel to the south shore of Lake Ontario for most of its length between Niagara County and Monroe County. NY 18, which also passes through Orleans County, acts as a northerly alternate to NY 104, another east–west route that parallels NY 18 to the south on Ridge Road. The western terminus of NY 18 is at a complex grade-separated interchange with NY 104 outside the village of Lewiston. Its eastern terminus is at a junction with NY 104 in an area of Rochester known as Eastman Business Park.

NY 18 was assigned in 1924 and originally extended from the Pennsylvania state line near Salamanca to downtown Buffalo via Dayton and Hamburg. It was extended northeast to Rochester via Niagara Falls as part of the 1930 renumbering of state highways in New York and east to NY 250 in the town of Webster by the following year. NY 18 was truncated on its west end to the town of Lewiston in the early 1960s and on its east end to Rochester in the early 1970s.

Although NY 18 is signed as east–west, it runs primarily north–south through the western portion of Niagara County. After leaving Niagara County, NY 18 shifts farther south, gradually moving away from the shore of Lake Ontario. In central Orleans County, NY 18 meets the Lake Ontario State Parkway at the Lakeside Beach State Park. The parkway then becomes the lakeside road, and NY 18 veers south to follow a more inland routing.

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New York State Route 18

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