page_title: County Route 46 (Suffolk County, New York)
section_title: Route description
hierarchical_section_title: County Route 46 (Suffolk County, New York) / Route description
caption_attribution_description: English: Suffolk County Route 46 (William Floyd Parkway) at the junction with New York State Route 25A in East Shoreham, New York.
context_page_description: County Route 46 is a major county road in eastern Suffolk County, New York, in the United States. It runs south-to-north from CR 75 in Smith Point County Park to New York State Route 25A near the border of Shoreham and Wading River. The road is known as the William Floyd Parkway along its entire length, and is named after William Floyd, a Long Island native and a signer of the United States Declaration of Independence. Despite its "parkway" designation within the State of New York, the road is open to commercial vehicles.
context_section_description: CR 46 begins at a traffic circle with (now unsigned) CR 75 in Smith Point County Park within the town of Brookhaven. A short distance north of the traffic circle, CR 46, known as the William Floyd Parkway, crosses past a large parking lot for Smith Point Beach, as well as several tennis courts and a basketball court. The route then proceeds northward to cross the Great South Bay on a bascule lift bridge and soon onto mainland Long Island. After crossing onto the mainland, CR 46 becomes a divided four-lane boulevard with a wide grass median past several bayside residential communities. Bending north through several residential neighborhoods of Smith Point, the route becomes a limited access parkway through the area, crossing into the community of Shirley near Coraci Boulevard.
  CR 46 crosses northeast through Shirley, passing a large commercial strip through the village and an at-grade interchange with Stuart Road. Just north of Tudor Road, the route crosses past several intersections with semi-circles in the center of Shirley, soon crossing the Long Island Rail Road Montauk Branch at-grade next to the Mastic-Shirley station. Expanding to eight lanes, CR 46 crosses a junction with Montauk Highway (CR 80). The parkway condenses to six lanes for a short distance northwest of the junction before reaching a cloverleaf interchange with NY 27 (Sunrise Highway) in Shirley. After Sunrise Highway, CR 46 crosses north as a four-lane boulevard through the East Yaphank section of Shirley.
  Passing Brookhaven Airport, CR 46 passes a lighted interchange with the airport access road just south of a campus for Dowling College. A distance north, the route crosses an intersection with Moriches-Middle Island Road, then crossing over the lone railroad track of the Long Island Rail Road's Main Line near an interchange for Ramsey Road and Suffolk County Police Department's Seventh Precinct. Just north of Ramsey Road, CR 46 encounters a large cloverleaf with exit 68 of the Long Island Expressway (I-495). After the interchange, William Floyd Parkway becomes a four-lane boulevard through a wooded section of the town of Brookhaven, soon reaching the Yaphank Woods Road development. Crossing Longwood Road/Princeton Avenue (which provides access to Brookhaven National Laboratory), the parkway bends northeast through a mix of wooded and residential sections. The route bends northward and enters a cloverleaf interchange with NY 25 (Middle Country Road).  
  Now in the Ridge section of the Town of Brookhaven, the parkway becomes semi-residential, passing multiple developments and an entrance to Brookhaven State Park near the junction with Whiskey Road. A large center median divides the lanes as the route crosses along the western extents of Brookhaven State Park, crossing into East Shoreham near the border with Wading River. Upon leaving the outskirts of the park, CR 46 enters an interchange with NY 25A. This interchange marks the northern terminus of CR 46 and the William Floyd Parkway.
caption: William Floyd Parkway at the junction with NY 25A in East Shoreham
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