Following its completion, the North–South Freeway portion of Route 42 has seen many improvements. In 1965, the freeway was widened to six lanes for most of its length with the northernmost part being widened to eight lanes due to the completion of the Atlantic City Expressway and development occurring along the route. The route had its interchange with Route 55 open in 1985, when the Route 55 Freeway was opened from Route 42 to Route 41 to the south. Between 1996 and August 1999, the route was widened to eight lanes between Interstate 295 and Route 55 in Deptford Township. In the early 2000s, the interchanges with Route 41 and County Route 544 in Deptford were rebuilt at a cost of $13 million to improve movements within the area. In October 2003, the New Jersey Department of Transportation (NJDOT) installed exit tabs along the stretch of the freeway portion of Route 42. On August 27, 2010, an interchange opened at County Route 673 (College Drive), providing better access to Camden County College.