The Tuckahoe Road Bridge, of rigid-frame reinforced concrete construction faced in stone, crosses the parkway at Mile Marker 3.3. A new stone retaining wall is north of the bridge on the west of the road. South of the bridge, the park road parallels Bronxville Lake and associated parkland. Located on the east of the main parkway drive and easily accessible from downtown Bronxville, this neighborhood park offers an attractive expanse of open lawns, walkways, benches, and diversified plantings. The older naturalistic arrangements are part of the parkway’s original design but a variety of exotic trees and plants have been added, both as "memorial" trees placed by local community members and in ornamental garden arrangements. These relatively recent plantings are colorful and popular, but do not conform to the naturalistic aesthetics that guided the parkway’s original landscape development. Pondfield Road crosses the parkway near the south end of Bronxville Lake at Mile Marker 3.1. The Pondfield Road Bridge is a rigid-frame concrete arch bridge faced in stone. The bridge crosses the Bronx River on a low arched concrete bridge faced in rustic stone. At Mile Marker 3.0, the park drive passes under the Palmer Road Bridge, another rigid-frame concrete arch grade separation with stone facing.
Just south of Palmer Road, the Bronx River Parkway (BRP) drive crosses over the Sprain Brook Parkway on a steel-girder bridge. South of the Sprain Brook Parkway, the Bronx River Parkway drive widens into six lanes. Each lane is approximately 12' wide. The road proceeds south to the Bronx Zoo area in a slightly curving alignment. Many of the historic bridges in this section were replaced by modern steel-girder structures. Jersey barriers are used as medians for most of the length of the drive south of the Sprain Brook Parkway. Streetlights are located in the center median and there are mountable concrete curbs at the outside edges of the driving surface. The Bronx section has long stretches of unadorned concrete retaining walls, though there are still several historic stone retaining wall segments. The parkway reservation is narrower in the southern portions and the bordering vegetation does not always screen motorists from views of adjacent development. While related recreational developments are more limited, there are walkways along the neighborhood sides of the reservation and some meadow and forest areas are well maintained in traditional naturalistic fashion.
The Desmond Road exit is to the west, just south of the Sprain Brook Parkway. The park drive then passes under the steel-girder Midland Avenue Bridge. After Midland Avenue, there are high concrete retaining walls on the west of the road and woods to the east.
Approximately .4 miles south of Midland Avenue, the Bronx River Parkway passes under four closely spaced bridges, including the grade separations for the Cross County Parkway and Broad Street. The Broad Street Viaduct is a multiple-arch concrete arch bridge from the original parkway construction and is difficult to see since the newer steel-girder bridges obscure the view of the viaduct.
Another .3 miles south, motorists pass under the Oak Street Bridge, then the Yonkers Avenue Bridge, both of which are constructed of steel girders. The walls of these bridges complement each other, with the Oak Street Bridge featuring an ornamental iron rail, and the Yonkers Avenue Bridge a concrete parapet that evokes the ornamentation of the Oak Street Bridge. The park drive passes under another steel-girder bridge at 241st Street.
South of 241st Street, Nereid Avenue is carried over the parkway, railroad, and Bronx River on a high concrete arch viaduct. South of Nereid Street, the park drive passes over the railroad tracks on a steel girder bridge. The drive then proceeds under the 233rd Street Bridge, an historic concrete arch bridge faced in stone. The southernmost bridge over the parkway dates to the road’s original construction and was designed by architect Charles Stoughton, who provided the architectural treatment for many of the parkway’s bridges and grade separations. The double-arched reinforced concrete Gun Hill Road Bridge is faced with an eclectic combination of brick, heavily rusticated stone, and finished granite copings. A medallion on the southeast abutment is incised with bold foot-high letters proclaiming B-R-P-R – Bronx River Parkway Reservation. The parkway reservation extends to the border of Bronx Park, but this point marked the original parkway drive’s junction with the pre-existing Bronx Boulevard. Today, the six-lane Bronx River Parkway traffic artery continues southward past the Bronx Zoo to the Cross Bronx Expressway (Interstate 95) and the Bruckner Expressway (Interstate 278).