Interstate 684

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Interstate 684
Auxiliary route of the Interstate Highway System

Length:

28.4 mi (45.7 km)

Formed:

1968 (completed in 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

The 684 C/D road at the Saw Mill and NY 117

Interstate 684 (abbreviated I-684) is a 28.4 mile-long (45.7 km) 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 History
3 Exit list
4 External links

[edit] Route description

Major cities Bolded cities are officially-designated control cities for signs
White Plains (via I-287) North Castle Katonah Brewster

Interstate 684 actually begins as two separate spur routes. The primary spur (the one officially designated I-684) begins at the White Plains/Harrison line at Exit 9A of the Cross-Westchester Expressway (Interstate 287). The other (designated New York State Reference Route 984J but still signed I-684) begins in Harrison, New York at exit 26A of the Hutchinson River Parkway and has one independent exit before joining with the I-287 spur into one route. The route follows a northerly course near the New York/Connecticut border, passing the Westchester County Airport, and at one point actually crossing the northwest corner of the Connecticut panhandle for 1.4 miles (2.3 km) without any exits before returning to New York (this brief interstate section is maintained by the New York State Department of Transportation but owned by the Connecticut Department of Transportation). Towards the northern border of Westchester County, it meets the northern terminus of the Saw Mill River Parkway. Once crossing into Putnam County, I-684 interchanges with its parent Interstate 84 in Brewster (map) before making a final interchange at a concurrency of U.S. Route 6, U.S. Route 202, and New York State Route 22, at which point the route terminates and becomes part of New York State Route 22. The speed limit is 65 mph (105 km/h), except on the spur from the Hutchinson River Parkway to just north of the Interstate 287 merge, and just south of the Interstate 84 terminus.

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] History

Please help improve this section by expanding it.
Further information might be found on the talk page or at requests for expansion.

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 and, north of Albany, the Adirondack Northway.

[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	Southbound 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	Greenwich	New York/Connecticut border. I-684 runs for 1.4 miles (2.3 km) 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	Southeast	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.