No, our infrastructure is not number one. The Airports in DC, NYC, LA, and Florida are national embarrassments. Visit almost any city in Germany, Japan, etc and you’ll see infrastructure.
I’ve had the experience several times of foreigners visiting amazed in some ways at how cool America is, and then stunned at the lack of transportation, the crappy internet, and other things they take for granted.
Most of the places with state-of-the-art airports don't have to deal with this kind of bureaucratic nonsense.
Here's something that the U.S. does exceptionally well, to the point where we are the envy of the world: railroads -- freight railroads in particular. You can travel from one end of the globe to another and you will never see a mile-long coal train of 280k-lb. rail cars running over steep grades like the Rocky Mountains, or a double-stack intermodal train making a 3,000-mile trip from Los Angeles to New York City in less than a week. Civil engineers and railroad officials from some of the most advanced countries in Asia and Europe are awed at how easily North American railroads move trains like this.
Here in the U.S. we do this sort of thing very well because this is much more important to our economy than airports are.