Fix infrastructure on the cheap while you still can

Thanks to the Federal Reserve’s zero interest rates and quantitative easing policies, borrowing costs are near generational lows. The costs of funding the repair and renovation of America’s decaying infrastructure are as cheap as they have been since World War II. 
But the era of cheap credit may be nearing its end. And thanks to a dysfunctional Washington, D.C., we are on the verge of missing a once-in-a-lifetime opportunity.
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That leaves Uncle Sam, along with the states and municipalities, as the odd men out of the debt refinancing boom. Rather than waiting for bridges to collapse to do expensive emergency repairs, we should proactively be upgrading and improving the rest of our infrastructure. We should be refinancing whatever debt we can while rates are still low.
What can we do as a nation to take advantage of these interest rates before they return to normal? Choose your favorite part of America that can be upgraded:...