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 U.S. Route 15 (US 15) is a part of the U.S. Highway System that runs from Walterboro, South Carolina, to Painted Post, New York. In the U.S. state of New York, US 15 extends 12.68 mi through the Southern Tier from the Pennsylvania state line at Lindley north to an interchange with the Southern Tier Expressway (Interstate 86 and New York State Route 17) just outside Painted Post. US 15 originally continued north to Rochester before being truncated to its present northern terminus. All of US 15 in New York was designated as I-99 on June 27, 2014.
New York State Route 306 New York State Route 306 (NY 306) is a north–south state highway in western Rockland County, New York, in the United States. NY 306 runs from NY 59 in the hamlet of Monsey to U.S. Route 202 (US 202) in Ladentown, on the western boundary of the village of Pomona. The road is currently 5.33 mi long; however, it originally extended south to the New Jersey state line and north to Willow Grove Road (former NY 210) when it was assigned as part of the 1930 renumbering of state highways in New York.