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American Public Works Association
Pennsylvania League of Cities and Municipalities The Asphalt Institute
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| National Asphalt Pavement Association
Pennsylvania State University Cooperative Extension Agency National Research Council, Strategic Highway Research Program Associated Pennsylvania Constructors American Society of Testing Materials National Association of County Engineers Constructors Association of Western Pennsylvania Virginia Road & Transportation Builders Association American Road & Transportation Builders Association Pennsylvania Coal Association The Associated General Contractors of America West Virginia Society of Professional Engineers Contractors Association of West Virginia Maryland Highway Contractors Association American Concrete Pavement Association The American Highway Users Alliance American Traffic Safety Services Association Associated Builders & Contractors Construction Industry Manufacturers Association National Utility Contractors Association Delaware Contractors Association Maryland Coal Association West Virginia Coal Association
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