 Route 4 starts in Paterson , Passaic County at the intersection of Broadway and East 43rd Street at an interchange with Route 20 ( McLean Boulevard ) , heading east on Broadway , a four @-@ lane , divided highway with a Jersey barrier and a speed limit of 40 mph ( 64 km / h ) . The route passes over Route 20 and continues east , crossing the Passaic River into Elmwood Park , Bergen County and passing over County Route 507 . Route 4 features a right @-@ in / right @-@ out in the eastbound direction that provides access to County Route 507 . The route continues east on Broadway as a divided highway with a concrete then a grassy median , with businesses lining both sides of the roadway . At the intersection with Cyril Avenue , Route 4 runs along the border of Elmwood Park to the south and Fair Lawn to the north before entirely entering Fair Lawn , where the route passes under New Jersey Transit ’ s Bergen County Line near Broadway Station . It intersects County Route 67 ( Midland Avenue ) and continues east as a divided highway with a Jersey barrier through commercial areas of Fair Lawn . 
