In Atlantic City, the route runs through the Marina District, which contains a few casinos, along Huron Avenue and Brigantine Boulevard.

The portion of this route south of Little Beach was to be built by Atlantic County; however, the state took over plans of building the road in 1938.

Despite this, Route S4A was never completed between Brigantine and Little Beach, and the portion of the road that existed in Ocean County was removed from the state highway system by 1941.

Immediately after, the route has a ramp from the southbound direction that provides access to the connector and westbound US 30.

The northbound Atlantic City–Brigantine Connector parallels Route 87 to the east as it turns northeast and comes to a right-in/right-out in the southbound direction that serves both Harrah's and Borgata.

[2] Past here, the route crosses over the Absecon Channel on the Justice Vincent S. Haneman Memorial Bridge and runs along the border of Atlantic City to the northwest and Brigantine to the southeast.

[1] After crossing the Absecon Channel, the route arrives on Brigantine Island and passes through wetlands, with U-turn ramps in both directions.