This seems unnecessarily conspiratorial considering we know for a fact that the US's infrastructure is literally crumbling beneath our cars and trucks.
Not to say that there aren't issues, but "crumbling US infrastructure" has been an on-again off-again news story for literally decades during which time we've had periods like the stimulus package for "shovel-ready" projects. I suspect infrastructure spending, especially in a country as large as the US, is essentially an unlimited sinkhole.
But then fix the sinkhole. Regionalize it, manage it better, change the incentives. I don't know what the answers are, but there's a whole host of countries that have great quality roads, bridges, and public transport.
And no, the 'size' of the US isn't a very good excuse. If a backwater road in Minnesota is run down, ok, but we're talking about major infrastructure in urban areas.