 New York State Route 25B | ||||
|---|---|---|---|---|
 Map of Long Island with NY 25B highlighted in red | ||||
| Route information | ||||
| Auxiliary route of NY 25 | ||||
| Maintained by NYSDOT, Nassau County and NYCDOT | ||||
| Length | 7.25 mi[1] (11.67 km) | |||
| Existed | c. 1935[2][3]–present | |||
| Major junctions | ||||
| West end |  NY 25 in Queens Village | |||
 Cross Island Parkway in Bellerose | ||||
| East end | NY 25 in Westbury | |||
| Location | ||||
| Country | United States | |||
| State | New York | |||
| Counties | Queens, Nassau | |||
| Highway system | ||||
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New York State Route 25B (NY 25B) is a 7.25-mile (11.67 km) east–west state highway located on Long Island in New York, United States. The western terminus of the route is at an intersection with NY 25 in Queens. The eastern terminus is at an interchange with NY 25 in Westbury, Nassau County. NY 25B is named Hillside Avenue for its entire length, except for a 0.69-mile (1.11 km) portion in the village of East Williston, where it is called East Williston Avenue and owned & maintained by Nassau County as the unsigned County Route 85.
The route, assigned in the mid-1930s, acts as a northern alternate to NY 25, running parallel to its parent for its entire length. Unlike NY 25, which is four lanes wide for most of its length between Queens and Westbury, NY 25B has a number of lane configurations, including six lanes in Queens, four lanes in western Nassau County, and two lanes in East Williston. The route also connects NY 25 to the villages of Williston Park and East Williston.