More states are now exploring the use of public-private partnerships (PPPs) to fund and support needed transportation projects. As many as 23 states have statutes that enable the use of various transportation funding approaches involving private entities.1 Proponents claim that, by introducing private capital into the mix of transportation funding, states can leverage public transportation dollars and bring projects to completion much sooner and at a lower cost. A variety of obstacles also can limit the use and effectiveness of PPPs, however.