What is Millau Viaduct?
{{Infobox bridge |bridge_name = Millau Viaduct |native_name = {{native name|fr|Viaduc de Millau}} |native_name_lang = |image = Millau Viaduct construction south.jpg |image_size = |alt = |caption = Millau Viaduct under construction |official_name = '''{{lang|fr|Viaduc de Millau}}''' |other_name = |carries = 4 lanes of the [[A75 autoroute]] |crosses = [[Gorge]] [[valley]] of the river [[Tarn (river)|Tarn]] |locale = [[Millau]]-[[Creissels]], [[Aveyron]], [[France]] |owner = |maint = [[Eiffage|Compagnie Eiffage du Viaduc de Millau]]<ref name=structurae>{{Structurae|access-date=12 September 2018}}</ref> |id = |designer = [[Michel Virlogeux|Dr Michel Virlogeux]], structural engineer<ref name=structurae/> |engineering = |design = Multiple-span [[Cable-stayed bridge|cable-stayed]] [[viaduct]] [[Autoroutes of France|motorway]] [[bridge]]<ref name=structurae/> |material = [[Concrete]], [[steel]] |length = {{convert|2460|m|abbr=on}}<ref name=structurae/> |width = {{convert|32.05|m|abbr=on}}<ref name=structurae/> |height = {{convert|336.4|m|abbr=on}} (max pylon above ground)<ref name=structurae/><ref name=BBC-Dec2004/> |mainspan = {{convert|342|m|abbr=on}}<ref name=structurae/> |spans = {{convert|204|m|abbr=on}},<br />6×{{convert|342|m|abbr=on}},<br />{{convert|204|m|abbr=on}}<ref name=structurae/> |pierswater = |load = |clearance = |below = {{convert|270|m|abbr=on}}<ref name=structurae/><ref name=BBC-May2004>{{cite web|url=http://news.BBC.co.uk/1/hi/world/europe/3759307.stm|title=France 'completes' tallest bridge|website=news.BBC.co.uk|publisher=[[BBC News]]|date=29 May 2004|access-date=2 May 2017}}</ref> |life = 120&nbsp;years |builder = [[Eiffage|Compagnie Eiffage du Viaduc de Millau]]<ref name=structurae/><ref name=BBC-Dec2004/><ref name=BBC-May2004/><ref name=BBC-N