Editing Interstate 684 (section)

==History==
[[File:Aerial - Muscoot Reservoir & Cross River Reservoir, NY 01 - white balanced (9614400358).jpg|thumb|left|I-684 wends between [[Muscoot Reservoir]] (top left) to its west and [[Cross River Reservoir]] to its east near [[Katonah, New York]]. Byram Lake Reservoir just west of I-684 at bottom. (Aerial photo, 2013).]]

An expressway along the NY&nbsp;22 corridor between White Plains and Brewster was planned by Westchester County in 1956. In 1961, the proposed routing of I-87 north of Elmsford along the east bank of the Hudson River was relocated to use the NY&nbsp;22 corridor instead via modern I-287 and I-84. After much controversy, the proposed routing of I-87 was approved by the [[Bureau of Public Roads]] in December 1964. Construction began soon after the approval with the southernmost section between White Plains and Armonk (including the short section in Connecticut) opened in October 1968. The northernmost section between Purdy's and Brewster opened in 1969.

On January 1, 1970, the designation I-87 was relocated to follow the [[New York State Thruway]] north of Elmsford. The old route was redesignated as I-684.<ref name="1970log">{{cite book |url=http://www.greaternyroads.info/pdfs/state70.pdf |title=Official Description of Touring Routes in New York State |date=January 1, 1970 |author=State of New York Department of Transportation |author-link=State of New York Department of Transportation |format=PDF |access-date=June 3, 2009}}</ref> Later that year, a third segment of the new highway between Armonk and Bedford Hills opened to traffic as well. For a time, Route&nbsp;22 was a four-lane superhighway extending from Bedford Hills/Katonah to Goldens Bridge. The final segment eventually utilized the footprint of Route&nbsp;22 and the Route&nbsp;22 designation was returned to "Old Route&nbsp;22", its original parallel path.  The portion from Goldens Bridge to Brewster, which required rock cuts, proved to be difficult from an engineering standpoint, was completed in December 1974. 
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