The Route 39 designation was removed in the 1953 renumbering to eliminate the concurrency with US 206.

The route continued northward, entering the community of Mansfield Township.

The four routes (25, 39, 130 and 206) continued northward, running concurrent for less until a mile, where they forked.

Routes 39 and 206 continued northward along the Mission Road before turning off and onto the straight alignment into Hamilton Township, a community outside of Trenton, the state capital.

From there, State Highway Route 39 made a bypass of the state capital, running northward through Mercer County until entering the community of Wilburtha, New Jersey.

[7] The Yardley-Wilburtha Bridge was destroyed two years later during the afterstorm flooding from Hurricane Diane in 1955.