Well I take 2 freeways on my commute to/from work and in the last 40 years both have been expanded. The population has also got up a bit. The basic infrastructure needed to support society is different from the "social engineering" projects designed to alter people's lifestyles. Perfect example imagine how many streets could be widened, bike lanes added (or made continuous) and bike paths built or extended with the money being wasted on the High Speed Rail project.