A better stimulus program

Instead of sending out checks so Americans could spend $100B or so more at Wal-Mart on non-durables from China, we could repair our entire bridge infrastructure for a mere $140B. Not only would that provide a much more lasting benefit to our economy, but the money would be spent primarily on domestic labor and materials. Granted, such a stimulus program would take years to put in effect, so there wouldn't be a huge short-term stimulus at all, but with our nation so much in hock, is this really the most efficient use of funds? Yes, in the long term I'd like to see taxes reduced and more money returned to the taxpayers, but infrastructure is pretty important to the long-term economic health of the country, and we don't seem to be doing well on rail, road, or air networks these days.