New York State Route 100A

NYS Route 100A
Route information
Auxiliary route of NY 100
Maintained by NYSDOT
Length:	4.21 mi[1] (6.78 km)
Existed:	1930[citation needed] – present
Major junctions
South end:	NY 100 in Greenburgh
	I-287 in Greenburgh/Elmsford
North end:	NY 100 / NY 100C in Greenburgh/Mount Pleasant
Location
Counties:	Westchester
Highway system
Numbered highways in New York Interstate • U.S. • N.Y. (former) • Reference • County ← NY 100 NY 100B →

New York State Route 100A (NY 100A) is a 4.21-mile (6.78 km) long loop route of NY 100 in the town of Greenburgh (in Westchester County). It starts in the hamlet of Hartsdale and ends in the community of Grasslands at the boundary between the towns Greenburgh and Mount Pleasant.

Route description

NY 100A splits from NY 100 along West Hartsdale Avenue, passing by several country clubs as it heads north. It crosses NY 100B 1.5 miles (2.4 km) from its southern end, where the road changes name to Knollwood Road. Knollwood Road runs along the eastern village line of Elmsford, crossing over NY 119 and I-287. The road continues north, passing by the Westchester Community College, ending at a four-way intersection where it meets NY 100 and NY 100C near the Kensico Cemetery.

History

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

Major intersections

The entire route is in Greenburgh, Westchester County.

Mile[1]	Destinations	Notes
0.00	NY 100	Hamlet of Hartsdale
1.52	NY 100B
2.21	NY 119
2.33	I-287	Exit 4; interchange at Elmsford village line
4.21	NY 100 / NY 100C	At Mount Pleasant town line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

New York Roads portal

1. ^ ^{a b} "2008 Traffic Data Report for New York State" (PDF). New York State Department of Transportation. June 16, 2009. p. 237. https://www.nysdot.gov/divisions/engineering/technical-services/hds-respository/NYSDOT_Traffic_Data_Report_2008.pdf. Retrieved January 10, 2010. 

External links

• New York Routes – New York State Route 100A
• New York State Highway Termini – New York State Route 100A