Major infrastructure investments—especially projects and programs of regional and national significance—can generate major “spillover” benefits to the general public—some, like locks and dams, literally so. This article explains why tax credit bonds should be in the mix of federal infrastructure policy initiatives. Previous generations of tax credit bonds, such as Build America Bonds, were highly successful in broadening the market for infrastructure debt but their authority has expired. We propose creating a new generation of qualified tax credit bonds. A separate article in this issue of Public Works Financing outlines a specific proposal to create “Infrastructure Credit Bonds”.