The road narrows shortly after the county line in the town of Putnam Valley, with the roadways reverting to two lanes and the shoulders replaced by soft curbs, in preparation for the rugged terrain of the next . From this point north, the original design of the Taconic is still intact for the most part, aside from safety improvements like the removal of some at-grade intersections. Curves become sharper, with the widest having a radius of . It remains generally level for the first , past the Bryant Pond Road exit serving Mahopac. The land around the road is heavily wooded and less developed than it was in Westchester.