Each year the League of American Bicyclists ranks each state in five areas: Legislation and enforcement; policies and programs; infrastructure and funding; education and encouragement; and evaluation and planning.
The Bicycle Friendly State Program ranks states annually based on their level of bike-friendliness. States receive feedback, technical assistance, training and further encouragement to improve their bicycling legislation, projects, and programs.
The summary report card can be found here. The detailed rankings and report cards for each state can be found here.