Forest Avenue (Staten Island)

New York State Route 439
Map of Staten Island with NY 439 highlighted in red
Route information
Maintained by NYSDOT
Length:	7.44 mi (11.97 km)
Existed:	1949 – c. 1968
Major junctions
West end:	Route 439 at the New Jersey state line on Staten Island
East end:	St. George ferry terminal on Staten Island
Location
Counties:	Richmond
Highway system
New York Highways Interstate U.S. State Reference Parkways ← NY 438 NY 439A →

New York State Route 439 (NY 439) was an east–west state highway on Staten Island in New York in the United States. The western terminus of the route was at the Goethals Bridge, where it continued into New Jersey as its Route 439. Its eastern terminus was at the Staten Island Ferry terminal in the St. George neighborhood. In between, NY 439 followed the Staten Island Expressway, Forest Avenue, Victory Boulevard, and Bay Street.

When NY 439 was assigned in 1949, it extended eastward into Brooklyn by way of the Bay Ridge Ferry. In Brooklyn, the NY 439 designation continued along Bay Ridge Avenue (69th Street), 4th Avenue and Shore Road Drive to exit 1 of the Belt Parkway, where it ended. In 1964, the Verrazano-Narrows Bridge between Brooklyn and Staten Island was completed, resulting in the deactivation of the Bay Ridge Ferry and the truncation of NY 439 to the St. George ferry terminal. NY 439 ceased to exist entirely c. 1968. Although the number was removed in New York, it had carried over to New Jersey and still exists today in Elizabeth, New Jersey, as Route 439.

NY 439 began at the Goethals Bridge on Staten Island, where it continued into New Jersey as its Route 439. It headed southeast on what is now the Staten Island Expressway, passing through a largely undeveloped area of the island. At Forest Avenue, NY 439 turned to follow Forest Avenue eastward toward the neighborhood of Graniteville. In Graniteville, the route intersected Richmond Avenue, at the time part of NY 440.