The Transportation System Preservation Technical Services Program (TSP∙2) was initiated as an efficient means to disseminate information to AASHTO member agencies for preserving their highway infrastructure, including both pavements and bridges. Its principal mission is to serve as a clearinghouse with comprehensive and up-to-date information on efficient and effective preservation measures that enhance highway performance and extend useful life.

AASHTO Program Invoices, Receipts, and FHWA’s SP&R Waiver Letter

FHWA’s SP&R Waiver Letter (.pdf)

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