City 66 Alignments | West of Oklahoma State Capital: Blue Line.
Along Northwest 23rd Street to Classen Boulevard. Classen Boulevard to 39th Street.
Along Northwest 23rd Street to Western Avenue. Western Avenue to 39th Street.
Along Northwest 23rd Street to May Avenue. May Avenue to 39th Street.
Western Avenue from Northwest 23rd Street to 39th Street. 39th Street west to May Avenue became Alternate 66 Route.
Along Northwest 23rd Street to May Avenue. May Avenue to 39th Street became Business 66 as City 66 was eliminated.
On March 5, 1979, US 66 Business Route deleted in Oklahoma City.