At the best of times, it can be difficult to finance, maintain and ensure the long-term viability of infrastructure, given the needs and financing methods used to get projects under way. In the United States, for example, many infrastructure projects are funded by municipal bonds and taxes, whereas in parts of Europe, Canada and Australia, public-private partnerships (partnerships or P3) are an innovative finance model that has taken hold as a form of infrastructure procurement. The model’s ability to efficiently finance facilities, as well as allow for their public benefit, has been up for debate, however.