D'Appolonia Engineering Email Format

Civil EngineeringPennsylvania, United States11-50 Employees

D'Appolonia Engineering is a civil engineering consultancy founded in 1956 and based in Pittsburgh, Pennsylvania. It serves industrial, commercial, and governmental clients, delivering engineering and related scientific services in the United States and internationally. The firm operates as a mid-sized regional practitioner with a long-standing presence in western Pennsylvania.

Its expertise spans geotechnical and civil engineering, dam and mine projects, environmental consulting, geology and geophysics, hydrology and hydraulics, and construction engineering services. The client base includes industrial, commercial, and government entities, and its projects reach the United States and markets across Europe, Africa, Asia, and the Americas. While rooted in western Pennsylvania, the firm maintains a regional focus and continues to expand its geographic footprint.

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