Watching the stimulus sublimate into the ether of falling real estate values and the fact that we are now the only nation willing to loan ourselves money due our crushing deficit spending, any further stimulus seems, mmm, impractical at this point.
Such a stimulus won't go towards 'rebuilding our infrastructure'. We're simply not set up for that. Our major utility, communications, energy, and transportation infrastructure is primarily privately owned by various bickering entities - figuring out who to pay out and for what would be virtually impossible, politically and practically. If we had a nationalized grid, rail system, and communications system we might have a crack at job creation in those sectors, but we don't.
Take the grid. It would be a great idea, for example, to build high voltage DC point to point long lines for greater efficiency, capacity, and flexibility in terms of bringing power from population poor, sun and wind rich areas to the major urban users. Good luck getting the three largely independent regions: West, East and...he he, TEXAS, and their clusterfuck of private owners to agree on who gets what money and for what. Yeah...see you in 100 years.
If we had a national grid, this would be no problem. But...GOVERNMENT IS BAD, so we've got an aging, inefficient, gridlocked, inflexible clusterfuck. In areas where there is strong centralized, government ownership: our own BPA comes to mind, the grid is quite a bit more up to date and better managed than in other areas. Go figure.
Notice how the stimulus didn't create fuck all for employment? Welcome to privatized America.