The Riviera closed in 1953 to make way for the Palisades Interstate Parkway. See the picture - high up on the NJ Palisades.
http://cgi.ebay.com/80-Bill-Millers-Riviera-Nightclub-1950s-Postcard_W0QQitemZ260044075660QQihZ016QQcategoryZ20224QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Ciao, Bill Romano R-6330