Castle Hill is a neighborhood located in the southeast section of the borough of the Bronx in New York City. Its boundaries are Waterbury Avenue and Westchester Avenue to the north, Westchester Creek to the east, the East River to the south, and White Plains Road to the west. Unionport is a subsection of Castle Hill, typically considered north of Lafayette Avenue.

The Bruckner Expressway is a freeway in the borough of the Bronx in New York City. It carries Interstate 278 (I-278) and I-95 from the Triborough Bridge to the south end of the New England Thruway at the Pelham Parkway interchange. The highway follows a mostly northeast–southwest alignment through the southern portion of the borough, loosely paralleling the course of the East River. It connects to several major freeways including the Bronx River Parkway, and at the Bruckner Interchange, it connects to the Cross Bronx Expressway, the Hutchinson River Expressway, and the Hutchinson River Parkway.