 Route 23 joins the Hamburg Turnpike and the road splits, with the southbound lanes crossing over the Pequannock River into Kinnelon for a time. The route passes by the Charlotteburg Reservoir, a reservoir for the Newark public water supply, and has a rest area in the northbound direction. Route 23 intersects County Route 513 (Union Valley Road), running concurrent with that route. The southbound lanes cross the Pequannock River into Jefferson Township, Morris County and County Route 513 splits from Route 23 by heading south on Green Pond Road. The southbound lanes cross back into West Milford, where the two separate roads rejoin. The infamous Clinton Road leaves at a traffic light from the northbound lanes and the route passes by some residences past Clinton Road. Route 23 continues northwest through forested areas, passing by the Oak Ridge Reservoir, another reservoir that provides water for Newark. The route crosses the Pequannock River three times, running within Jefferson Township between the first two crossings and past the third crossing.
