The first of those sections to be repaired will be the 14th arch on the Malá Strana side. Repairs of the arch will begin at the end of next year, followed by a similar process throughout the rest of the Bridge over the next 20 years.  
Charles Bridge is made up of 66,000 individual stones – and every last one of them will be inspected during an intensive restoration project that is slated to last 20 years.The Bridge has undergone numerous transformations over the years, and was most severely damaged during the floods of 1890. 

Prague’s historic Charles Bridge, a UNESCO Heritage Site and one of the Czech Republic’s most-seen landmarks, began construction in 1357 and was finished about four decades later. The bridge is built of sandstone blocks, flanked at each end by fortified towers (Lesser Town Bridge Towers, Old Town Bridge Tower). From 1683 to 1928, 30 statues of saints were carved to decorate the bridge, the most famous of which is the statue of St John of Nepomuk.