New York State Route 101 (NY 101) is a long state highway in northwestern Nassau County, New York, in the United States. It runs north–south as Port Washington Boulevard from NY 25A in Flower Hill, west of Roslyn and east of Manhasset, to Astor Lane in Sands Point. It becomes County Route 101 (CR 101) south along Searingtown Road to Shelter Rock Road (CR 8) and becomes Middle Neck Road (CR D55) north of Astor Lane, continuing north and west to a dead end at the Long Island Sound as the unsigned County Route D55 (CR D55).
NY 101 was assigned while the county route continuations were assigned in 1959. CR 101 was initially signed; however, signage for the route was removed in 1973. In the 1960s, a proposal was made to construct an expressway, known as the Western Nassau Expressway. This expressway would have extended from NY 27 to NY 101 and utilized the NY 101 corridor north of NY 25A. The proposal was shelved in the 1970s.
Route description
South of NY 25A (CR 101) CR 101 begins at an intersection with Shelter Rock Road (CR 8) and Herricks Road near Herricks High School. The route heads eastward as Searingtown Road, passing to the south of the high school and to the north of a small pond. One block east of Herricks Road, CR 101 intersects with Old Searingtown Road, a former alignment of the current CR 101 alignment. At this point, the highway curves to the northeast and passes through a small area of trees nestled amongst a large, residential area bordering Williston Park. Old Searingtown Road rejoins CR 101 at the northern edge of the forested area.
The route continues north, serving as the boundary between Searingtown and Albertson as it proceeds past side streets lined by homes. At I.U. Willets Road, CR 101 serves the Henry Viscardi School and enters Searingtown. Just inside of the community, CR 101 intersects Hilldale Drive and Dogwood Road, two local streets connecting to Herricks Middle School. The route continues on through Searingtown into the village of North Hills, where the homes give way to trees as it turns to the northeast and passes under the Northern State Parkway. A short distance after the Northern Parkway overpass, CR 101 meets the Long Island Expressway (Interstate 495) by way of Nassau Boulevard—the southern service road—and North Service Road.
North of the Long Island Expressway, CR 101 passes by Christopher Morley Park to the east and residential neighborhoods to the west. Past the park, CR 101 enters an area with more residential development as it begins to run along the western boundary of Roslyn Estates and the eastern edge of Manhasset. The homes give way to commercial developments as the highway approaches Flower Hill and NY 25A (Northern Boulevard). Searingtown Road becomes Port Washington Boulevard and CR 101 becomes NY 101 upon intersecting NY 25A.
Historically, Searingtown Road was known as Searington–Flower Hill Road.
NY 101
NY 101 continues north from NY 25A as a four-lane, undivided highway, passing homes, businesses, and small patches of trees situated near the junction with NY 25A. At an intersection with Park Avenue North, NY 101 becomes a divided highway with two lanes in each direction. The highway continues north through Flower Hill to St. Francis Hospital, where it curves to the northwest to serve the center of Flower Hill. Here, NY 101 passes east of the Flower Hill Village Park and west of the North Hempstead Country Club, before curving back to the north and entering Port Washington.
In Port Washington, NY 101 passes Nassau Knolls Cemetery and narrows to become a four-lane undivided highway as it enters the center of the hamlet. It proceeds north–south through downtown, passing several blocks of commercial buildings and Paul D. Schreiber Senior High School ahead of a junction with Main Street. North of this point, the surroundings of NY 101 become more residential as the route narrows to two lanes and passes into the village of Sands Point. NY 101 ends shortly afterward at an intersection with Astor Lane, at which point Port Washington Boulevard is continued by Middle Neck Road and designated as CR 101.
North of Astor Lane (CR D55)
North of Astor Lane, the road becomes Middle Neck Road (CR D55) and heads northward, passing local residences and local commercial buildings to the west and the Village Club of Sands Point to the east. North of the club, the highway curves to the northwest and becomes surrounded by several blocks of residential homes to the southwest and patches of trees to the northeast as it heads deeper into the village.