"Conferencias Aula Abierta:
De maceta a rascacielos. El hormigón armado, la invención de un material. November 07, 2014, 12 p.m."
Mercedes López García. Profesora titular de Estética de la Ingeniería de la Universidad Politécnica de Madrid.

A really interesting conference.
link

Some investigations have led experts to assess that G. Eiffel designed a steel truss bridge in Asturias: the "Parana" Viaduct in the railway from Lena to Pajares.

The story ended in 1954, when someone decided that the bridge was no longer available for the new convoyes...

More information:
http://elblogdeacebedo.blogspot.com.es/2014/08/el-problema-del-puente-arroyo-parana.html

Dr. Rosignoli has 32 years of experience in bridge design and construction in the US and abroad. He has worked with bridge contractors, designers, and owners in over 20 countries and four continents, serving as designer, reviewer, or technical leader for cable-stayed bridges, incrementally launched bridges, balanced-cantilever bridges, and light rail and high-speed railway bridges. An international authority on mechanized bridge construction and the incremental launching of bridges, he is the author of three books on bridge launching and mechanized bridge construction and more than 90 papers on bridge design and construction technology and holds more than 30 patents on bridge construction methods. He is also author of Chapter 6 of ASBI Construction Practices Handbook and of Chapter 6.37.40 of UNESCO Encyclopedia of Life Support Systems, he has founded and is chairing IABSE WG-6 Bridge Construction Equipment. He is member of ASBI Technical Advisory Committee, ASCE member, and IABSE fellow. He has published two "must-read" during the last year:

A really incredible tipe-lapse of an outstanding bridge. Please notice the flexibility of the structure during the construction.
By Carlos Fernández Casado, S.L.

link: http://seguimientodeobras.com/nuestros-trabajos/nuevo-puente-sobre-la-bahia-de-cadiz/