The objective of this study was to evaluate the performance of coatings for highway culverts and to recommend methods of improving culvert service life through improved coating systems and other means. A literature search was conducted through a review of technical literature and interviews with cognizant state officials throughout the United States. Field investigations conducted in nine states confirmed the findings of the literature search. Coating types examined at various test sites and actual drainage installations include: asphalt, asbestos bonded asphalt, asphalt paving, coal tar laminate, polyethylene, PVC, vinyl plastisol, aluminized, aluminum - zinc and epoxy coated concrete.