Duvall Engineering 14525 Main St Ne Duvall, WA 98019 Phone : (425) 788-5959 Business Category Government Offices-City Village & Twp Legislative Bodies Duvall City Of--engineering Duvall, WA 98019 Phone : (425) 788-5959 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools