Business in the area of the road increase before US 206 widens to four total lanes and comes to a modified cloverleaf interchange with I-80 and the southern terminus of Route 183. At this point, the road continues north into Netcong as Route 183 while US 206 heads west along I-80, a six-lane freeway that continues into Mount Olive Township. The freeway continues northwest, running through a small corner of Netcong before coming back into Mount Olive Township and interchanging with US 46. Immediately after US 46, the highway passes over NJ Transit's Morristown Line/Montclair-Boonton Line before turning north and reaching a trumpet interchange where US 206 splits from I-80. Following this split, US 206 is a four-lane freeway that heads northeast, crossing under Waterloo Valley Road and an abandoned railroad line before coming to an interchange with International Drive.