$70b in Freeway Funding Comes From Non-Users

The main reason for this increasing divergence is that gas taxes have stayed stagnant, while highway bond measures were on the rise.

"Analyzing Federal Highway Administration data dating back to 1957, the dawn of the Interstate system, Subsidyscope researchers found that non-users of the highway system contributed $70 billion for nationwide road construction and maintenance in 2007. In 1982, by contrast, highway contributions from non-users totaled just $35 billion (in 2007 dollars)."