Interstate 684

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Interstate 684
Auxiliary route of the Interstate Highway System

Length:

28.4 mi (45.7 km)

Formed:

1968-1974

South end:

I-287 near White Plains, NY

Major
junctions:

Hutchinson River in Harrison, NY

Saw Mill in Katonah, NY

I-84 near Brewster

North end:

NY 22 near Brewster, NY

Interstate 684 (abbreviated I-684) is a 28.4 mile-long north-south Interstate highway in the states of New York and Connecticut. The highway connects Interstate 84 with Interstate 287 and the Hutchinson River Parkway, primarily serving commuter traffic to/from the northern suburbs of the New York metropolitan area.

1 Route description
2 Legal Definition
3 Exit list
4 Notes
5 External links

[edit] Route description

Interstate 684 begins at interchange 20 from I-84 (map) in Brewster, New York. Heading south, I-684 then enters Westchester County where it meets with the northern end of the Saw Mill River Parkway in Bedford, New York. I-684 then briefly cuts across the northwest corner of the Connecticut panhandle in Fairfield County, Connecticut, in which no exits exist. This portion of roadway is maintained by the New York State Department of Transportation but owned by the Connecticut Department of Transportation and is 1.4 miles long. The road then passes by Westchester County Airport (at Exit 2). The roadway splits into two branches at Exit 1. The main line continues southwest towards Interstate 287 at the White Plains city line. The other branch continues southeast towards the Hutchinson River Parkway in Harrison, New York (this stub signed as I-684 is New York State Reference Route 984J).

Major cities
Brewster
Katonah
North Castle
White Plains (control city only)

[edit] Legal Definition

The route of the New York section of Interstate 684 is defined as part of Interstate Route 502 in New York Highway Law § 340-a.[1]

[edit] Exit list

Diagram of interchanges 5 and 6.

County	Town	Mile	Exit	Road	Notes
Westchester	White Plains	0.0		I-287 – Rye, White Plans	I-287 East, To I-95 keep straight I-287 West, Westchester Avenue exit on the right
	Harrison	0.8	1	Hutchinson River Parkway South – Whitestone Bridge	Soutbound exit only – No commercial vehicles this exit. Reference Route 984J (signed as I-684) One intermediate exit (Exit 1A) for Manhattanville Road.
	North Castle	4.4	2	NY 120 – Westchester County Airport	County Route 135 (Airport Road)
Fairfield	New York/Connecticut border. I-684 runs for 1.4 miles within Connecticut then re-enters New York. No exits in Connecticut.
Westchester	North Castle	7.6	3N-S	NY 22 – Bedford, Armonk	Single exit southbound
	Bedford	12.6	4	NY 172 – Bedford, Mount Kisco
		16.8	5	Saw Mill River Parkway NY 117	Southbound exit only. The Saw Mill acts as a collector-distributor road beginning just south of the NY 35 interchange.
		17.7	6	NY 35 – Cross River, Katonah	Northbound, the Saw Mill acts as a collector-distributor road and ends just south of the NY 35 interchange.
	Lewisboro	19.9	6A	NY 22 TO NY 138 – Goldens Bridge	Northbound exit only
	North Salem	22.4	7	NY 116 – Purdys, Somers	Northbound exit only, TO NY 22
	North Salem	23.9	8	Hardscrabble Road – Croton Falls, Purdys
Putnam	Southest	28.1	9E-W	I-84 – Newburgh, Danbury
		28.4	10	US 6/US 202/NY 22 (south)
		28.5	Northbound I-684 ends; roadway downgrades and continues as NY 22 northbound.

[edit] Notes

The alignment of I-684 is part of the original routing of Interstate 87. The designation was changed in 1970 when it was decided to have I-87 go along the New York State Thruway instead.