Founded in 1946, Penfield & Smith specializes in the design of roadways, bridges, and water and wastewater systems. The company provides services in the areas of flood control, solid waste management, municipal financing, traffic engineering and transportation planning. It offers engineering and construction services for airports and educational institutions. The company serves customers in the aviation, education, residential, defense and transportation sectors. Its clients include the Central Coast Water Authority, Donahue Schriber Realty Group, and Granite Construction Company. The company manages a staff of more than 35 civil engineers. Penfield & Smith is a member of the American Public Works Association, American Society of Civil Engineers, and Consulting Engineers and Land Surveyors of California.

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