the problem is not the PPP concept or lack of maintainence. it is improper funding for this huge infrastructure project that don’t generate enough revenue to make it that viable. it is also the policies behind this kind of structures. roads, water work, sewage etc are public benefits that aren’t suppose to generate income. what the govt needs is dedicated funding structure that done depending on oil revenue. for road both state and federal, income needs to generated from fuel taxes. for other infrastructure, property taxes should be used by local govt to maintain water work, sanitation, and sewage, even law enforcement.