Interstate 684

Interstate 684 (I-684) is a 28.4 mile-long (45.7 km) north–south Interstate Highway in the states of New York and Connecticut in the United States. The highway connects I-84 with I-287 and the Hutchinson River Parkway, primarily serving commuter traffic to and from the northern suburbs of the New York metropolitan area. The route of the highway was originally designated as part of I-87 during the 1960s. The first section of the roadway opened to traffic in October 1968, and the final segment was completed in December 1974.

Route description

Cross-Westchester Expressway to Saw Mill River Parkway

I-684 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 (I-287) in Westchester County, New York. The other, designated as New York State Route 984J (NY 984J) but still signed I-684, begins in Harrison at exit 26A of the Hutchinson River Parkway and has one independent exit with Manhattanville Road before joining with the I-287 spur into one route. 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 a golf course on the west and residences on the east. After the Barnes Lane overpass a mile and a half (2 km) north of the spurs, it veers to the north-northeast for a half-mile (1 km) before turning to the north alongside Rye Lake, part of Kensico Reservoir, one of many that 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, 4.4 miles (7.1 km) from its southern terminus. NY 120 parallels the highway to the east.