New York State Route 100

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NY Route 100

Length:

33.27 mi^[1] (53.54 km)

South end:

Cross County in Yonkers

Major
junctions:

I-287 in Greenburgh

Saw Mill in Mount Pleasant

Taconic in New Castle

North end:

US 202 in Somers

Counties:

Westchester

New York State Routes
< NY 98		NY 100A >

New York State Route 100 (NY 100) is a major north-south state highway in Westchester County, New York. It begins parallel to Interstate 87 at a junction with the Cross County Parkway in the city of Yonkers and runs through most of the length of the county up to U.S. Route 202 in the town of Somers just south of the county line with Putnam County.

1 Route description
2 Communities along the route
3 Major intersections
4 History
5 References
6 External links

[edit] Route description

The highway begins in Yonkers where it splits from I-87 at Exit 5, then traverses almost the entirety of Westchester County. NY 100 passes through Yonkers, Greenburgh, Hartsdale, Ardsley, and southern White Plains as Central Park Avenue. "Central Avenue" as the highway is referred to by residents, is a major north-south thoroughfare in southern Westchester and is a large shopping area, often drawing shoppers from the Bronx and New York City.

It overlaps with NY 119 for a short distance before turning north again through Hawthorne, where it meets NY 9A and multiplexes for several miles as a limited-access highway. NY 100 branches off on its own again in Briarcliff Manor, roughly following New York Central's old Putnam Division railroad. Many of the railroad's old stations can be found along the highway.

It passes through Millwood just after crossing the Taconic and then into Yorktown where it diverges from the Putnam Division just before crossing the Croton Reservoir After crossing the reservoir it enters Somers and passing some of the last remaining rural areas in the county. Including Muscoot Farm, a county owned early-1900's interpretive farm. In its northern extremes, it roughly parallels the Croton Reservoir before meeting up with US 202, where it ends.

[edit] Communities along the route

Yonkers
Greenburgh
White Plains — northwest corner only
Mount Pleasant
Briarcliff Manor
Ossining town — goes through a very short portion south of New Castle town line
New Castle
Yorktown
Somers

[edit] Major intersections

County	Location	Mile	Road(s)	Notes
Westchester	Yonkers	0.0	Cross County	Exit 4N-S (Cross County).
		1.1	Sprain Brook
		1.7	CR 36 Tuckahoe Road
	Greenburgh	4.8	CR 78 Ardesley Road
	Greenburgh	6.9	NY 100A	Hamlet of Hartsdale.
	White Plains	8.5	NY 119
	Greenburgh	8.8	I-287	Exit 5 (I-287).
	Greenburgh	9.1	NY 119
	Mount Pleasant	11.0	CR 35 Virginia Avenue	At town line with Greenburgh.
		12.3	NY 100A NY 100C	At town line with Greenburgh.
		13.7	Sprain Brook
		14.9	NY 141
		15.0	Saw Mill
		15.0	NY 9A
		16.2	NY 117
	Briarcliff Manor	18.1	NY 9A	Split actually just outside village line in Mount Pleasant town.
	New Castle	20.7	NY 133
		20.8	Taconic
		21.1	NY 133
		21.6	NY 120
	Yorktown	23.2	NY 134
		23.9	CR 5 Seven Bridges Road
		24.9	NY 118
	Somers	29.3	NY 35
		29.9	NY 139
		32.4	NY 138
		33.3	US 202

Legend
Crossing, no access	Concurrency termini	Decommissioned	Unconstructed	Closed

[edit] History

Originally, NY 100 was concurrent with US 202/NY 22 and ran almost as far north as Brewster in Putnam County.
Until 1956, NY 100 ran further south along the New York State Thruway to the Major Deagan Expressway at Exit 13, and was concurrent with NY 22 south into the Bronx and Manhattan.