"Portland earned the Gold designation back in 2003 and has been working to achieve Platinum for well over two years. Back in February of 2006, Commissioner Sam Adams launched a nine-part strategy and called together advocates and community leaders to work toward achieving the goal."
Even the Gold level was pretty exclusive: Only six other cities have reached it. 15 have attained Silver, and 49 got Bronze. Five main factors have been evaluated (they call them the 5Es, though there's a 'P' at the end): engineering, education, encouragement, enforcement, and evaluation and planning. Once again, congrats Portland! ::Portland earns Platinum; becomes first major U.S. city to win the award, ::Portland earns a Platinum rating from the League of American Bicyclists