It remained Route 29 through the 1953 New Jersey state highway renumbering and was moved onto the John Fitch Parkway upon its completion in the 1960s.

The road becomes two-way, enters Ewing Township, and is maintained by the New Jersey Department of Transportation (NJDOT).

The highway continues, intersecting with County Route 643 (CR 643, Lower Ferry Road) in Ewing.

The highway turns onto West Upper Ferry Road, heading to the northeast, crossing through a wealthy district in Ewing surrounded by woodlands.

[2] Route 175 heads northward along the Delaware and Raritan Canal as River Road, passing through woodlands and residential homes.

Continuing along the canal, Route 175 progresses northward, intersecting with Trooper Drive before crossing under Interstate 295 at Interchange 76.