I started my career working in the transportation sector, and that leaves me skeptical that it can be so simple. I've watched cost cutters at work in government transportation departments. Their MO seems to always be to cut the costs that are easy to cut so they can claim easy wins right away. Unfortunately, the costs that are easy to cut are typically things like skimping on maintenance. This leads to higher costs in the long run, but, hey, that'll take decades to come to fruition, and by then it'll be someone else's problem.
In short, the state of American infrastructure today is a result of decades upon decades of mismanagement by the cost cutters. I have a hard time believing they can also be the solution.
Maybe find an efficiency maven instead?