The bridge spanning the River Truyere near Ruynes-en-Margeride was built by a graduate of which university?
Garabit viaduct: The Garabit Viaduct ("Viaduc de Garabit" in French) is a railway arch bridge spanning the River Truyère near Ruynes-en-Margeride (), Cantal, France, in the mountainous Massif Central region. Gustave Eiffel:  A graduate of École Centrale Paris, he made his name with various bridges for the French railway network, most famously the Garabit viaduct.
i don't know