The land gets more built up as the road enters Lanoka Harbor. A crossing of the Cedar Creek takes the route into Berkeley Township and US 9 continues north as Atlantic City Boulevard. At Bayville, the route is lined with businesses and makes a turn to the northwest. The road briefly forms the border between Berkeley Township to the southwest and Pine Beach to the northeast prior to crossing into Beachwood. In Beachwood, Route 166 heads north as the route widens into a four-lane divided highway. Past Route 166, US 9 turns more to the west past residential neighborhoods as a four-lane undivided road, entering South Toms River, where it widens into a divided highway. US 9 crosses CR 530 prior to merging onto the Garden State Parkway again at another interchange. At this interchange, the southbound direction of US 9 briefly runs concurrent with eastbound CR 530.
