 New York State Route 171 | ||||
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 Map of Herkimer and Oneida counties with NY 171 highlighted in red | ||||
| Route information | ||||
| Maintained by NYSDOT and the village of Frankfort | ||||
| Length | 5.69 mi[1] (9.16 km) | |||
| Existed | 1930[2]–present | |||
| Major junctions | ||||
| West end | CR 145 / CR 185 in Frankfort town | |||
| East end | Main Street in Frankfort village | |||
| Location | ||||
| Country | United States | |||
| State | New York | |||
| Counties | Herkimer | |||
| Highway system | ||||
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New York State Route 171 (NY 171) is a state highway running east to west through Herkimer County, New York, in the United States. It connects the hamlet of Gulph in the town of Frankfort to the village of Frankfort by way of the Frankfort Gorge. Its western end is at the junction of County Route 145 (CR 145) and CR 185 southeast of Gulph. The eastern end is 5.69 miles (9.16 km) to the east at an intersection with Main Street in Frankfort village. NY 171 is a narrow, two-lane highway for its whole length.
NY 171 is the only signed state highway in New York that does not intersect any other signed New York state routes. However, this was not always the case. When it was originally assigned as part of the 1930 renumbering of state highways in New York, Main Street in Frankfort was part of NY 5S. A new freeway alignment for NY 5S was constructed between Utica and Ilion in the late 1960s, isolating NY 171 from the remainder of the state highway system. Frankfort's interchange with NY 5S is now at Cemetery Street, 0.75 miles (1.21 km) to the west.