Eugène Fressinet

Eugène Freyssinet was a French civil engineer best known for his pioneering work with pre-stressed concrete. He developed methods to embed steel wire under tension within concrete, significantly strengthening structural members. Freyssinet designed several notable bridges, including the Plougastel Bridge, which was the largest reinforced-concrete bridge of its time. His innovations in pre-stressed concrete, particularly his discovery that high-strength steel under high stress was crucial for permanent pre-stressing, gradually became universally adopted after he developed practical tools for applying tension to steel in 1938.1