https://www.fhwa.dot.gov/ipd/p3/toolkit/
FHWA encourages the consideration of public-private partnerships (P3s) in the development of transportation improvements. Early involvement of the private sector can bring creativity, efficiency, and capital to address complex transportation problems facing State and local governments. The Center for Innovative Finance Support provides information and expertise in the use of different P3 approaches, and assistance in using tools including the SEP-15 program, private activity bonds (PABs), and the TIFIA Federal credit program to facilitate P3 projects.