 New York State Route 18F | ||||
|---|---|---|---|---|
 Map of the Buffalo–Niagara Falls area with NY 18F highlighted in red | ||||
| Route information | ||||
| Auxiliary route of NY 18 | ||||
| Maintained by NYSDOT, Niagara County, and the town of Porter | ||||
| Length | 9.80 mi[1] (15.77 km) | |||
| Existed | January 1, 1949[2]–present | |||
| Tourist routes |  Great Lakes Seaway Trail | |||
| Major junctions | ||||
| South end |   NY 104 / Niagara Scenic Parkway in Lewiston | |||
| NY 958A in Porter | ||||
| North end |  NY 18 in Porter | |||
| Location | ||||
| Country | United States | |||
| State | New York | |||
| Counties | Niagara | |||
| Highway system | ||||
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New York State Route 18F (NY 18F) is a 9.80-mile (15.77 km) long state highway in northwestern Niagara County, New York, in the United States. The southern terminus of the route is at an interchange with NY 104 and the Niagara Scenic Parkway just east of the village of Lewiston. The northern terminus is at an intersection with NY 18 near Four Mile Creek State Park in Porter. NY 18F parallels NY 18 for most of its alignment, taking a more westerly course than its parent. NY 18F is the only remaining suffixed route of NY 18.
The portion of modern NY 18F south of Youngstown was originally designated as part of NY 34 in 1924; however, NY 34 was absorbed into NY 18 as part of the 1930 renumbering of state highways in New York. The change was part of a larger extension of NY 18 east to Rochester. NY 18 was realigned in 1949 to follow its modern alignment between Lewiston and Lake Ontario, at which time its former routing alongside the Niagara River became NY 18F.