New York State Route 100A (NY 100A) is a loop route of NY 100 in

Westchester County, New York Westchester County is located in the U.S. state of New York. It is the seventh most populous county in the State of New York and the most populous north of New York City. According to the 2020 United States Census, the county had a population o ...

, in the United States. It follows West Hartsdale Avenue and Knollwood Road in the town of

Greenburgh Greenburgh is a town in western Westchester County, New York. The population was 95,397 at the time of the 2020 census. History Greenburgh developed along the Hudson River, long the main transportation route. It was settled by northern Europeans ...

. The route starts in the hamlet of

Hartsdale Hartsdale is a hamlet located in the town of Greenburgh, Westchester County, New York, United States. The population was 5,293 at the 2010 census. It is a suburb of New York City. History Hartsdale, a CDP/hamlet/post-office in the town of Green ...

and ends in the community of Grasslands at the boundary between the towns of Greenburgh and Mount Pleasant.

Route description

NY 100A begins at an intersection with NY 100 (Central Park Avenue) in the town of

, a short distance north of

. NY 100A winds northwest through the hills of Greenburgh as West Hartsdale Avenue, passing multiple residences on its way up. Just after Woods End Lane, the route turns northward through Greenburgh, passing Ridge Road County Park and the Metropolis Country Club before reaching a junction with NY 100B (Dobbs Ferry Road). At this junction, NY 100A changes monikers to Knollwood Road, winding northward through Greenburgh into a junction with

NY 119 New York State Route 119 (NY 119) is an east–west state highway in Westchester County, New York, in the United States. The road starts in Tarrytown at an intersection with U.S. Route 9 (US 9) and comes to an end at a junctio ...

as it crosses into the village of

Elmsford Elmsford is a village in Westchester County, New York, United States. It is part of the New York metropolitan area. Roughly one mile square, the village is fully contained within the borders of the town of Greenburgh. As of the 2010 census, th ...

. After NY 119, NY 100A passes Yosemite Park and enters exit 4 off the

Cross Westchester Expressway Interstate 287 (I-287) is an auxiliary Interstate Highway in the US states of New Jersey and New York. It is a partial beltway around New York City, serving the northern half of New Jersey and the counties of Rockland and Westchester in N ...

(I-287). NY 100A continues northeast through Elmsford, running along the southeastern edge of the Knollwood Country Club and passing an entrance to

Westchester Community College Westchester Community College (WCC) is a public community college in Valhalla, New York, in Westchester County. It is part of the State University of New York (SUNY) system. History New York Institute of Applied Arts and Sciences becomes West ...

. After passing the entrance, the route winds northward through Greenburgh, passing multiple residences before reaching a junction with NY 100 (Grasslands Road) and NY 100C (Grasslands Road). This junction marks the northern terminus of NY 100A and the eastern terminus of NY 100C, with NY 100 turning north onto Bradhurst Avenue, the continuation of Knollwood Road. Several blocks away from this junction is the

Kensico Cemetery Kensico Cemetery, located in Valhalla, Westchester County, New York was founded in 1889, when many New York City cemeteries were becoming full, and rural cemeteries were being created near the railroads that served the city. Initially , it was ...

History

NY 100A was designated in the 1930 state highway renumbering and has not had any major changes since.

Major intersections

References

External links

{{NYSR external links, type=N, nyroutes=yes, termini=yes, route=100, suf=A 100A Transportation in Westchester County, New York

Route description

History

Major intersections

See also

References

External links