Simpkins & Costelli, Inc. is an experienced professional engineering firm that has served the Mississippi Gulf Coast since 1973. They specialize in civil and structural engineering design, project management, and construction administration. Their services include structural engineering for pile-supported concrete wharf construction, tied-back steel or concrete bulkheads, warehousing, structural repairs for existing wharves; design of foundation and superstructure for commercial, industrial, and institutional buildings; municipal and industrial water and wastewater treatment facilities; and civil site work including drainage, utilities, pavement, and stormwater control for commercial, industrial, or residential subdivisions.