On August 30, 1939, the entirety of NY 97 was officially opened to traffic. Several events were held to mark the road's opening, including a ribbon-cutting ceremony in Port Jervis featuring the mayors of Port Jervis and Hancock and a motorcade procession that traveled the length of the highway. In all, it cost $4 million (equivalent to $ in ) to build NY 97. The portion through the Hawk's Nest cost $2 million (equivalent to $ in ) to construct. Following the road's completion, NY 97 was extended north to Hancock, overlapping NY 17B. The overlap was eliminated in the mid-1960s when NY 17B was truncated to Callicoon.