François Gustave Théophile Seyrig (19 February 1843 to 5 July 1923) was a German

engineer Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the l ...

, best known for designing

bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...

s. On 6 October 1868, he founded ''Eiffel and Company'' with

Gustave Eiffel Alexandre Gustave Eiffel (born Bonickhausen dit Eiffel; ; ; 15 December 1832 – 27 December 1923) was a French civil engineer. A graduate of École Centrale des Arts et Manufactures, he made his name with various bridges for the French railway ...

. Seyrig contributed to the Eiffel and Company project to build the

Maria Pia Bridge The Maria Pia Bridge (in Portuguese ''Ponte de D. Maria Pia'', commonly known as ''Ponte de Dona Maria Pia'') is a railway bridge built in 1877, and attributed to Gustave Eiffel, situated over the Portuguese northern municipalities of Porto and V ...

Porto Porto or Oporto () is the second-largest city in Portugal, the capital of the Porto District, and one of the Iberian Peninsula's major urban areas. Porto city proper, which is the entire municipality of Porto, is small compared to its metropol ...

Portugal Portugal, officially the Portuguese Republic ( pt, República Portuguesa, links=yes ), is a country whose mainland is located on the Iberian Peninsula of Southwestern Europe, and whose territory also includes the Atlantic archipelagos of ...

, which was finished in 1877. Seyrig presented a paper on the bridge to the Société des Ingénieurs Civils in 1878. Later he worked for the Belgian firm Société Willebroeck in

Brussels Brussels (french: Bruxelles or ; nl, Brussel ), officially the Brussels-Capital Region (All text and all but one graphic show the English name as Brussels-Capital Region.) (french: link=no, Région de Bruxelles-Capitale; nl, link=no, Bruss ...

, and won the competition to build the

Dom Luís I Bridge The Dom Luís I Bridge ( pt, Ponte de Dom Luís I), or Luís I Bridge, is a double-deck metal arch bridge that spans the River Douro between the cities of Porto and Vila Nova de Gaia in Portugal. At its construction, its span was the longest o ...

(also in Porto), beating the Eiffel proposal. He began construction in 1881 and the bridge was finished in 1886.

Works

* Neuvial Viaduct * Rouzat Viaduct File:PonteMariaPia.jpg ,

(1877). File:Ponte D. Luis - Porto.JPG ,

(1886).

Writings

* Seyrig, Théophile. ''Pont d. Luiz I. à Porto'', Librairie centrales des chemins de fer, Paris, 1884 * Seyrig, Théophile. ''Éléments de statique graphique appliquée aux constructions'', Baudry, Paris, 1886; pp. 392

References

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Bibliography

* ''Ponte Maria Pia'', Ordem dos Engenheiros, Região Norte, , 2005 {{DEFAULTSORT:Seyrig, Theophile 1843 births 1923 deaths Engineers from Berlin German civil engineers