The two legs of CR 531 eventually reach US 22. Watchung Avenue and Somerset Street provide right-in/right-out access to both sides of US 22, however for through traffic along CR 531, an overpass located between the two legs of the route is used to cross US 22. Heading northwest, the two legs of CR 531 come together and the road heads through a water gap formed by Stony Brook through the First Watchung Mountain towards Watchung.
The two sections of CR 531 connect with US 22. Watchung Avenue and Somerset Street offer access to both sides of US 22, but for traffic traveling through CR 531, an overpass is used to cross US 22. When heading northwest, the two parts of CR 531 merge and pass through a water gap created by Stony Brook in First Watchung Mountain, leading towards Watchung.