 Past this interchange , the speed limit increases to 55 mph ( 89 km / h ) and the road heads into Paterson . Here , the route has a southbound exit and northbound entrance with County Route 621 ( Valley Road ) before becoming an eight @-@ lane road and interchanging with Interstate 80 , where the speed limit drops to 50 mph ( 80 km / h ) . Past I @-@ 80 , the speed limit lowers to 40 mph ( 64 km / h ) and Route 19 continues north as a five @-@ lane road , with three northbound lanes and two southbound lanes , to an interchange with County Route 638 ( Grand Street ) . From here , the route becomes a four @-@ lane divided surface road and heads into urbanized areas of downtown Paterson . The route turns east and becomes a 25 mph ( 40 km / h ) county @-@ maintained undivided road at the intersection with Marshall Street and continues to its northern terminus at the intersection of County Route 509 ( Main Street ) and Ward Street . 
