In June 2017, the American Association of State Highway and Transportation Officials (AASHTO) Subcommittee on Bridges and Structures is expected to adopt the recently completed AASHTO/NSBA S8.2, SSPC-PA 18 - Specification for Application of Thermal Spray Coatings on Steel Bridges1. This specification was the collective work of over 50 stakeholders within the AASHTO/NSBA Collaboration group TG8 (Coatings), including thermal spray coatings (TSC) applicators, bridge owners, engineers, and inspectors. This new specification establishes and defines the functions, operations, requirements, and activities needed to achieve consistent quality in TSC application for steel bridges. It is based on a cooperative approach to achieving quality, where both the owner’s and applicator’s representatives work together with a clear understanding of their roles and responsibilities, resulting in metallizing of steel bridges and components completed in an efficient manner. This paper provides an overview and the highlights of this specification.
Key words: thermal spray coating, specification, steel bridges, AASHTO, metallizing