Yes, but the US infrastructure is largely intact and well maintained. We can keep building roads and bridges, but we don't need any more. We could rebuild our airports/seaports, but the impact there would be more efficient air travel, not the economic boom you get from the original port. Commuter rail is a pretty good option, but only in certain regional areas and perhaps some municipal areas. Libraries, jails, courthouses, schools -- maybe there are some projects there, but again I don't see those as leading to an economic boom.
I really don't see as many good options for infrastructure spending as a country like China has (who, let's be honest, is playing catch-up). Perhaps we could do something real crazy, like build a space elevator, to create new markets rather than trying to build stuff for the sake of building stuff.
I'm from Australia and I just finished a 10,000 mile road trip around your nation with some mates. I can assure you your road network is falling apart. A lot of the time I felt like I was driving in a 3rd world country. While it is evident that the US has invested a lot in infrastructure in the past they are certainly not well maintained. From my limited experience Illinois had the worse road conditions and New Mexico and Texas has the best.
Here's what the economist has to say:
"Total public spending on transport and water infrastructure has fallen steadily since the 1960s and now stands at 2.4% of GDP. Europe, by contrast, invests 5% of GDP in its infrastructure, while China is racing into the future at 9%."
and
"In 2008 the commission (National Surface Transportation Policy and Revenue Study Commission) reckoned that America needed at least $255 billion per year in transport spending over the next half-century to keep the system in good repair and make the needed upgrades. Current spending falls 60% short of that amount."
china and india are investing in LFTR reactors. The US is going to look rather silly when the rest of the world starts producing massive amounts of cheap energy.
I really don't see as many good options for infrastructure spending as a country like China has (who, let's be honest, is playing catch-up). Perhaps we could do something real crazy, like build a space elevator, to create new markets rather than trying to build stuff for the sake of building stuff.