 I @-@ 87 was assigned on August 14 , 1957 , as part of the establishment of the Interstate Highway System . The highway initially utilized the pre @-@ existing New York State Thruway from Albany to Newburgh and in lower Westchester County , and the Major Deegan Expressway in New York City . From Newburgh to the Elmsford area , I @-@ 87 was to follow a new highway running parallel to US 9 northward along the eastern bank of the Hudson River to Fishkill . I @-@ 87 would then have followed the proposed I @-@ 84 across the Hudson to rejoin the Thruway outside of Newburgh . After the Hudson River Expressway proposal was cancelled in the 1960s , the alignment of I @-@ 87 was shifted further east to follow a newly @-@ completed freeway in the Route 22 corridor that started at I @-@ 287 in White Plains , then cut north through the extreme southwest corner of Connecticut before re @-@ entering New York and reaching I @-@ 84 at Brewster . I @-@ 87 then followed I @-@ 84 west to Newburgh . In 1970 , the I @-@ 87 designation was shifted to the New York State Thruway between Newburgh and the Deegan Expressway ; its previous alignment between Brewster and White Plains was redesignated as Interstate 684 . Meanwhile , all of the Adirondack Northway , the portion of I @-@ 87 slated to extend from Albany north to the Canadian border , had yet to be built . Fuller Road Alternate , the spur leading south from the Adirondack Northway to US 20 , was originally intended to be part of the Southern Albany Expressway , a proposed highway which would have connected the Northway with I @-@ 787 and run parallel to the Thruway between exits 23 and 24 . 
