Route 20 continues to follow the Passaic River as a road through commercial areas, featuring an intersection with County Route 652 (5th Avenue). Past this intersection, the route proceeds through urban areas, turning west and splitting into a one-way pair. Here, the route becomes county maintained, with the northbound direction following 1st Avenue and the southbound direction following 2nd Avenue before continuing west as County Route 504 (River Street).
Route 20 continues to follow the Passaic River as a road through commercial areas featuring an intersection with County Route 652 (5th Avenue) Past this intersection the route proceeds through urban areas turning west and splitting into a one-way pair Here the route becomes county maintained with the northbound direction following 1st Avenue and the southbound direction following 2nd Avenue before continuing west as County Route 504 (River Street)