After the intersection with Twin Rivers Drive, Route 33 enters Monroe Township, Middlesex County, where it serves many residential communities. Continuing east, activity along the sides of the highway disappears, and the route enters Millstone Township, Monmouth County, where businesses begin to reappear. Crossing into Manalapan Township, Route 33 passes through a mix of farmland and commercial areas before reaching the western terminus of Route 33 Business, an old alignment of Route 33. At this point, Route 33 becomes a freeway known as the Freehold Bypass, and enters Freehold Township. The freeway passes south of Freehold Raceway Mall and bypasses Freehold Borough, reaching interchanges with County Route 537 (CR 537) and US 9 at the southern terminus of Route 79. Heading into more rural areas, Route 33 enters Howell Township and meets the eastern terminus of Route 33 Business as the freeway ends.