 The only part of the HRE that was completed was the Croton Expressway, built in 1967 from Ossining to Peekskill and designated as US 9.The remaining of the HRE between Ossining and Tarrytown, by this point redesignated New York State Route 399 (NY 399), were effectively cancelled on November 20, 1971, when Governor Rockefeller declared the Hudson River Expressway proposal "dead".In 1970, the state of New York petitioned to have the I-487 designation reassigned to a West Dutchess Expressway connecting Tarrytown to Poughkeepsie.