Wading River was the end of the extension just north of what state highway on Long Island?
New York State Route 25A New York State Route 25A (NY 25A) is a state highway on Long Island in New York in the United States. It serves as the main east–west route for most of the North Shore of Long Island, running for 73 mi from Interstate 495 (I-495) at the Queens–Midtown Tunnel in the New York City borough of Queens to NY 25 in Calverton, Suffolk County. The highway is a northern alternate route of NY 25, which follows a more inland routing along Jericho Turnpike.
Sprain Brook Parkway The Sprain Brook Parkway (also known as The Sprain) is a 12.65 mi long north–south parkway in Westchester County, New York, United States. It begins at an interchange with the Bronx River Parkway in the city of Yonkers, and ends at the former site of the Hawthorne Circle, where it merges into the Taconic State Parkway. The parkway serves an alternate to the Bronx River Parkway, boasting an interchange connection through western Westchester with Interstate 287. New York's Department of Transportation (NYSDOT) refers to it internally as New York State Route 987F (NY 987F), an unsigned reference route.