Ferdinand Joseph Arnodin (9 October 1845 – 24 April 1924) was a French engineer and industrialist born in Sainte-Foy-lès-Lyon, Rhône who died in Châteauneuf-sur-Loire in Loiret.
Arnodin built a great number of second generation suspension bridges at the turn of the 20th century, and he also restored and consolidated a number of old first generation suspension bridges (before 1860): the aprons were reinforced and the old wire cables replaced by spirally-wound double torsion steel wire ropes, often with addition of a cable-stayed bridge (known structural modification under the name of “Système Arnodin”).
His factory (for the production of prefabricated metal sub-structures) was established in Châteauneuf-sur-Loire.
Vestiges of this factory were still visible a few years ago, and the chimney could still be seen, half ruined, between the Loire and railway.
The Loire Fleet Museum, at Châteauneuf-sur-Loire, shows memories of these workshops: an old model of the Nantes transporter bridge, a section of steel wire rope manufactured by Arnodin and photographs.