As of June 27, 2014, the United States Route 15 going through New York State was redesignated as what motorway, running from central Pennsylvania through southern New York?
U.S. Route 15 in New York:  All of US 15 in New York was designated as I-99 on June 27, 2014. Interstate 99: Interstate 99 (I-99) is an Interstate Highway with two segments: one located in central Pennsylvania, and the other in southern New York in the United States.
Interstate 99