1886 – Ponte Dom Luis I, Porto, Portugal
Architect: Téophile Seyrig
A symbol of Porto, the two-level iron bridge – Dom Luís I was designed by the Belgian engineer Téophile Seyrig, a student of Gustave Eiffel. He later designed a railway bridge – Maria Pia with Eiffel in the city. At the time of construction its span of 172m was the longest of its type in the world.
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Published October 2, 2009 | Last Updated March 5, 2026

