bridges of concrete (+ steel)
extraordinary structures of beauty and imagination
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France, Midi-Pyrenees Region, Aveyron Department, Millau, Millau Viaduct Bridge Photographic Print by Walter Bibikow | Art.com
le Viaduc de Millau, a cable-stayed bridge spanning the Tarn valley in southern France. The tallest bridge in the world. One mast's summit is 343m (1,125’) above its base. Designed by French structural engineer Michel Virlogeux and British architect Norman Foster (2004) photo by Walter Bibikow leviaducdemillau.com
Citadella Bridge, Alessandria, Italy (2017) designed by architect Richard Meier
The 185-metre-long Citadella Bridge, across the Tanaro River, Alessandria, Italy. A single 70-foot-high bowstring arch of white concrete and painted steel, separating vehicular and pedestrian traffic, was designed by American architect Richard Meier.
Viaduct Almonte River, SPain at DuckDuckGo
Viaduct over Almonte River, Garrovillas de Alconétar, Cáceres, Extremadura, Spain. Longest concrete arched bridge for high-speed rail: main span of 384m/1260' in 80 MPa/11,603 psi high-performance concrete. ACI Excellence Award Winner (2018). Ultraval SR Special Cement w/ low C3A quantities to help avoid delayed ettringite formation; river sand for a mixture that could be pumped 200m/655' horizontally + 80m/260' vertically; and fly ash + high-range water-reducing admixtures for 90 minute…
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