Millions of your dollars spent to re-elect politicians

This is an outrage. (h/t Kleinheider). Millions of dollars are being spent on signs in construction zones that tout the stimulus bill. I recently saw one of these signs on a road that did not even need paving. Pure waste. If our government insists on wasting money, why not build some windmills or something that will eventually pay for itself? Why not rebuild a crumbling bridge instead of spending money on signs to re-elect incumbents? Why spend money to pave roads that don't need paving yet?