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.

NY 439 began at the Goethals Bridge on Staten Island, where it continued into New Jersey as its Route 439.

In Graniteville, the route intersected Richmond Avenue, at the time part of NY 440.

[4] The route continued on, passing through densely populated areas of northern Staten Island as it proceeded eastward.

[1][5] The route began at the Goethals Bridge and, as it did for the entirety of its existence, followed Forest Avenue, Victory Boulevard, and Bay Street to the Staten Island Ferry terminal in St.