The delayed capital works. If 10% is normal, off the back of the Eisenhower era spend, the JFK spend, the LBJ spend on infrastructure, then capital works budgets have been lick-of-paint since. They're overdue for significant re investment.
The federal capital works improvement spending proposed as recovery intervention identifies 100 major bridges nationally, and another 10,000 worth investing in.[1]
Since then 10% can't stop, the likely spend has to be more. It's that simple.
Your reply is useless, but I'll rephrase to clarify anyway: how would one determine what percentage is appropriate for planning long term? I.e. so that I don't see potholes in 10 years, would I need 12% or 18% or 44% or <>% ? What factors would this depend on? E.g. is it always above 10% or only if the town has a very low density?
