sentences:  The portion south of the North Hempstead–Oyster Bay town line is the unsigned County Route 1 (CR 1), while the portion north of the town line until its intersection with NY 107 is designated as New York State Route 900B (NY 900B), an unsigned reference route, New York State Route 107 (NY 107), and County Route 243 (CR 243), an unsigned county route.The northern segment of the highway encompasses the Glen Cove Arterial Highway, a limited-access highway that was intended to connect to a proposed bridge across the Long Island Sound to Connecticut.Glen Cove Road was once signed as Nassau County Route 1 until all county route numbers were removed in the 1970s.