In a public-private partnership, the private partner is responsible for multiple stages of an infrastructure project in a way that transfers risks to it and creates incentives for that partner to be efficient. Such partnerships that provide transportation and water infrastructure are uncommon in the United States. This report explains differences in the use of public-private partnerships for transportation and those for water infrastructure, assessing whether partnerships build projects more quickly or less expensively for taxpayers and whether partnerships that included private financing sped up the financing of projects.

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