sentences:  The road has two intermediate exits and is maintained by Westchester County as County Route 150.The Central Westchester Parkway was first conceived in the 1920s, from a plan by Westchester County to construct a west–east parkway from Elmsford to White Plains.Never constructed to its full length, the parkway was opened on August 13, 1932 from Westchester Avenue to the city of White Plains.