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.
Shinnecock Canal The Shinnecock Canal (also known as the Shinnecock and Peconic Canal) is a canal that cuts across the South Fork of Long Island at Hampton Bays, New York. At 4700 ft long, it connects Great Peconic Bay and the north fork of Long Island with Shinnecock Bay and the Atlantic Ocean. The canal opened to traffic in 1892.