François Gustave Théophile Seyrig (19 February 1843 – 5 July 1923) was a German-born French

engineer Engineers, as practitioners of engineering, are professionals who Invention, invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while ...

, best known for designing

bridge A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, whi ...

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

Gustave Eiffel Alexandre Gustave Eiffel ( , ; 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 net ...

. Seyrig contributed to the Eiffel and Company project to build the Maria Pia Bridge in

Porto Porto (), also known in English language, English as Oporto, is the List of cities in Portugal, second largest city in Portugal, after Lisbon. It is the capital of the Porto District and one of the Iberian Peninsula's major urban areas. Porto c ...

Portugal Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring Cabo da Roca, the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it share ...

, 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, officially the Brussels-Capital Region, (All text and all but one graphic show the English name as Brussels-Capital Region.) is a Communities, regions and language areas of Belgium#Regions, region of Belgium comprising #Municipalit ...

, and won the competition to build the Dom Luís I Bridge (also in Porto), beating the Eiffel proposal. He began construction in 1881 and the bridge was finished in 1886.

Works

* Maria Pia Bridge * Dom Luís I Bridge * Neuvial Viaduct * Rouzat Viaduct File:PonteMariaPia.jpg , Maria Pia Bridge (1877). File:Ponte D. Luis - Porto.JPG , Dom Luís I Bridge (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 Engineers from the Kingdom of Prussia