The highway continues back into Rockaway Township as it widens to eight lanes and comes to the CR 661 exit near the Rockaway Townsquare shopping mall. Suburban development near the highway becomes more dense at this point as I-80 briefly passes through a corner of Rockaway before coming to the interchange with CR 513 in Rockaway Township. The freeway passes over the Dover and Rockaway River Railroad's Dover and Rockaway Branch and turns southeast here into Denville. In the center of Denville, it has an eastbound exit and westbound entrance serving US 46 that also provides access to Route 53. There is a westbound exit and eastbound entrance serving both US 46 and Route 53 as the road begins to turn more to the east. I-80 turns south and crosses the Montclair-Boonton Line for a third time before it enters Parsippany-Troy Hills. The highway makes a turn east as it comes into an area of business parks, with the median widening before an interchange serving US 202 and CR 654. The median narrows again before I-80 reaches the I-287 interchange that also has movements to US 46 and Smith Road to and from the east.