Editing Interstate 684 (section)

===Cross Westchester Expressway to Saw Mill River Parkway ===
Northward, I-684 begins as two separate spur routes. The primary spur, which is officially designated I-684, begins at the [[White Plains, New York|White Plains]]–[[Harrison, New York|Harrison]] line at exit&nbsp;9A of the [[Cross Westchester Expressway]] ([[Interstate 287|I-287]]) in [[Westchester County, New York]]. The other, officially designated as '''New York State Route&nbsp;984J''' ('''NY&nbsp;984J''') but signed as I-684 in the northbound direction, begins in Harrison north of exit&nbsp;16A (formerly exit&nbsp;26) on the [[Hutchinson River Parkway]]. NY&nbsp;984J has one independent exit with Manhattanville Road, which serves [[Manhattanville College]], before joining the spur to I-287. The spurs, I-287 and the Hutch, surround an [[office park]]. From the junction of the two spurs, the Interstate Highway takes a straight course to the north-northwest through a wooded corridor with Century Country Club on the west and residences on the east. After the Barnes Lane overpass a mile and a half ({{Convert|1.5|mi|km|disp=output only}}) north of the spurs, it veers to the north-northeast for a half-mile ({{Convert|0.5|mi|m|disp=output only}}) before turning to the north alongside Rye Lake, part of [[Kensico Reservoir]], one of many that [[New York City water supply system|provide water to New York City]]. It remains in an increasingly narrow strip of woods between the lake and [[Westchester County Airport]] into its first exit, Airport Road, {{Convert|4.4|mi|km}} from its southern terminus. [[New York State Route 120|NY&nbsp;120]] parallels the highway to the east.

[[File:CT state line signs on I-684.jpg|upright|thumb|left|Signs at Connecticut state line]]

Just north of that exit, NY&nbsp;120 crosses over the road. Immediately after this exit, I-684 crosses the Connecticut state line. Signage indicates this, but it retains its New York [[reference marker]]s as it curves more to the northeast for the next {{convert|1.41|mi}} through wooded and swampy country in the western corner of [[Greenwich, Connecticut|Greenwich]]. There is no exit in Connecticut. {{One2a|{{convert|1|mi|km|spell=In}}}} after it reenters New York, in the town of [[North Castle, New York|North Castle]], it reaches its next exit, where [[New York State Route 22|NY&nbsp;22]] serves that community and the nearby hamlet of [[Armonk, New York|Armonk]]. The short section of I-684 in Connecticut is owned by the [[Connecticut Department of Transportation]] (CTDOT), but maintenance and repairs to the stretch are performed by the [[New York State Department of Transportation]] (NYSDOT), with the cost of maintenance being reimbursed to New York by Connecticut.

Past that exit, it bends even more to the northeast, continuing past houses, parks, and golf courses located amidst dense woodlands. At Byram Lake Reservoir, it returns to a northward heading for {{One2a|{{convert|1|mi|km|spell=in}}}}, crossing into the town of [[Bedford (town), New York|Bedford]]. The highway then curves northeasterly and then to the northwest once the reservoir is past. The Arthur W. Butler Memorial Sanctuary, a private nature preserve, replaces it on the east of the highway. Just south of the exit for [[New York State Route 172|NY&nbsp;172]], I-684 bends northwest again.

Over the next {{Convert|2|mi|km|spell=in}}, the Interstate curves gently back and forth, maintaining its generally northerly heading, as its [[median strip]] widens slightly. The surrounding lands start to include some more cleared lots, larger estates that were once small farms. At the northern end of this section, a [[rest area]] serves southbound traffic. The highway passes [[Bedford Hills Correctional Facility for Women]], one of New York's two main women's prisons, a short distance to its west, and then bends northwest into the most extensive junction since its beginning: the northern terminus of the [[Saw Mill River Parkway]].