Examples that prove insightful to you are a personal matter. Unless you believe it important that spending be apportioned by lane-mile or road inventory (which I'd argue is rife with moral hazard), it is likely that your state effects net infrastructure transfers from urban to rural, as is the case in mine.

If it's the 90% figure you doubt, I encourage you to look into some road projects. In Virginia, we have a particularly problematic system where the local contribution is pegged at 2% (see page 52)(though it can vary by project.) You are welcome to read the VA urban (misnomer) maintenance code, though I encourage you to find the one applicable to you, so you can be familiar with the perverse incentives provided in your own area. [http://www.virginiadot.org/business/resources/local_assistan...]