 New York State Route 448 ( NY 448 ) is a 3 @.@ 90 @-@ mile ( 6 @.@ 28 km ) long state highway in western Westchester County , New York , in the United States . The route begins in the village of Sleepy Hollow at U.S. Route 9 ( US 9 ) and goes in a northeast direction through the Pocantico Hills community in Mount Pleasant . It ends at NY 117 in Mount Pleasant , near the junction of NY 117 with Saw Mill River Road ( NY 9A and NY 100 ) and the Taconic State Parkway . From 1930 to the early 1970s , NY 448 was part of NY 117 . 
 New York State Route 448 ( NY 448 ) <a href='drop_aux' title='1'><mark>is</mark></a>a 3 @.@ 90 @-@ mile ( 6 @.@ 28 km ) long state highway in western Westchester County , New York , in the United States . The route <a href='uninflect' title='2'><mark>begins</mark></a> in the village of Sleepy Hollow at U.S. Route 9 ( US 9 ) and <a href='uninflect' title='3'><mark>goes</mark></a> in a northeast direction through the Pocantico Hills community in Mount Pleasant . It <a href='uninflect' title='4'><mark>ends</mark></a> at NY 117 in Mount Pleasant , near the junction of NY 117 with Saw Mill River Road ( NY 9A and NY 100 ) and the Taconic State Parkway . From 1930 to the early 1970s , NY 448 was part of NY 117 . 
New York State Route 448 ( NY 448 ) a 3 @.@ 90 @-@ mile ( 6 @.@ 28 km ) long state highway in western Westchester County , New York , in the United States . The route begin in da village of Sleepy Hollow at U.S. Route 9 ( US 9 ) and go in a northeast direction through tdaPocantico Hills community in Mount Pleasant . It end at NY 117 in Mount Pleasant , near thdaunction of NY 117 wit Saw Mill River Road ( NY 9A and NY 100 ) and thedaconic State Parkway . From 1930 to the early 1970s , NY 448 was part of NY 117 .