Interstate 684

Interstate 684 (I-684) is a 28.47-mile (45.82 km) auxiliary Interstate Highway in the state of New York in the United States. There is also a short portion in Connecticut with no junctions. 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. Most of the route is in northern Westchester County. The route of the highway was originally designated as part of I-87 from 1968 to 1970. The first section of the roadway opened to traffic in October 1968, and the final segment was completed in December 1974.

Interstate 684

I-684 highlighted in red, and extensions maintained as reference routes in blue
Route information
Auxiliary route of I-84 in New York
Maintained by NYSDOT
Length28.47 mi (45.82 km)
ExistedJanuary 1, 1970–present
HistoryFirst segment opened in October 1968, completed in December 1974
NHSEntire route
Major junctions
South end I-287 / Hutchinson River Parkway in Harrison
Major intersections
  • NY 22 in Armonk
  • NY 35 / NY 117 / Saw Mill River Parkway in Katonah
North end I-84 / US 6 / US 202 / NY 22 in Southeast
Location
CountryUnited States
StatesNew York, Connecticut
CountiesNY: Westchester, Putnam
CT: Fairfield
Highway system
  • Main
  • Auxiliary
  • Suffixed
  • Business
  • Future
← I-678NY→ I-687
← I-491CT→ I-691
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