NY 40 was re-extended on its northern end to follow its former routing northeastward to Middle Granville, where it ended at NY 22. The alignment proved to be temporary as the Hartford–West Granville highway was improved during the mid-1960s and became part of a realigned NY 40 by 1968. The last change to NY 40's routing came in 1973 when it was truncated on its southern end to the junction of Hoosick Street (NY 7) and 10th Street in Troy. As a result, NY 40 was also realigned slightly to use 10th Street and Oakwood Avenue between Hoosick and 15th Streets. NY 40's former routing on Winter Street was redesignated as NY 405.