The Long-Term Infrastructure Performance (LTIP) Programs include the Long-Term Pavement Performance (LTPP) Program and the Long-Term Bridge Performance (LTBP) Program. These programs, conducted in collaboration with the State department of transportation infrastructure owners, provide for characterization and monitoring of in-service highway pavement test sections (LTPP) and bridges (LTBP) to assemble the data needed to improve infrastructure design and advance the understanding of highway infrastructure performance necessary to effectively manage transportation assets. The collected data are disseminated to the public through web-based portals. Federal Highway Administration's (FHWA’s) investment in obtaining and disseminating the data is leveraged by both public and private sector research organizations that apply the data to address a variety of infrastructure performance needs of local, State, regional, and national interest.
Historically, LTPP and LTBP were managed and pursued as independent research efforts. In 2017, in recognition of opportunities for synergy and improved efficiency, FHWA transitioned to an integrated approach for managing the two programs.