A unique and very pictures viaduct is located in the canton of Graubünden (Switzerland) at the site Albuliyskoy railway that connects the city of Filisur and Tifinkastel. Landwasser viaduct is high arched railroad bridge with a single a track of which spans the Landwasser river.
When laying the largest rail network in Switzerland - "Rhaetian Railway" I had to overcome many obstacles, as it passes through the high mountains of the Canton of Grisons, this required to build a variety of bridges, but the biggest concern is probably the most difficult of them the most picturesque - the viaduct Landwasser , it spans the Landwasser river after which it was named.
Landwasser viaduct has a length of 136 m and a height of 65 m, it consists of six arches length - 20 meters each and is based on the 5 high pylons, widening to the bottom. The bridge is not straight, and arc - radius of 100 meters, after which the train meets a cliff in who did a 216-meter tunnel Landwasser. flickr/Daniel Friedlos
The bridge of the Rhaetian railway was designed by Alexander akatos, and its construction took the company Müller and Tserleder (it. Müller & Zeerleder), which for the year (from 1901 to 1902) was able to complete this difficult task. After all, the way of construction of the bridge due to its terrain and conditions were completely innovative, instead of using the then popular building intending forests, to raise building materials themselves have used the bridge supports. To do this, first built metal structures - support for which was raised overhead crane and with the help of his electric winch construction materials delivered to the site of the masonry.
With the increase in the height of towers erected metal structures and build on, which allowed to raise and set of an overhead crane. Iron towers were then left in the masonry. Masonry viaduct itself is made from limestone and dolomite, its scope is - 9200kub.m. The opening of the bridge took place in 1902. Construction costs amounted to 280,000 Swiss francs.
Once active operation of a century (106 years have passed since the opening of the bridge), but by this time it has traveled for about 100 thousand trains, viaduct Landwasser demanded restoration. The restoration lasted from May to September 2009, while it was possible to see the whole bridge has become bright red due to the panels, which stretched for restoration. To strengthen the construction of a bridge in masonry was introduced a special firming solution and were replaced sleepers and rails. The appearance, however, remains unchanged, as the viaduct is on the list of World Heritage by UNESCO and the change in appearance is prohibited.
During several months of active restoration work, and the work did not stop even at night, the trains did not stop walking on your schedule, however machinists passing over the bridge had to reduce speed to 10 km / h. Although there have been such works that can not be done without stopping the movement of trains, for example, replacement of sleepers and rails, they then perform at night. Thus, the entire restoration period viaduct Landwasser remained in working condition. The cost of the restoration was - 4.6 million Swiss francs.
Now this line of railways in Switzerland has become very popular and mandatory for tourists from around the world. Especially interesting is itself viaduct Landwasser , which became a symbol of Albuliyskoy railway, which is also from July 7, 2008 is a UNESCO World Heritage Site. The best view of the viaduct is opened from the outside, for example, for passengers traveling on the railway line Davos - Filisur. Every day, over this bridge passes 60 trains and 22,000 trains a year.
With the increase in the height of towers erected metal structures and build on, which allowed to raise and set of an overhead crane. Iron towers were then left in the masonry. Masonry viaduct itself is made from limestone and dolomite, its scope is - 9200kub.m. The opening of the bridge took place in 1902. Construction costs amounted to 280,000 Swiss francs.
Once active operation of a century (106 years have passed since the opening of the bridge), but by this time it has traveled for about 100 thousand trains, viaduct Landwasser demanded restoration. The restoration lasted from May to September 2009, while it was possible to see the whole bridge has become bright red due to the panels, which stretched for restoration. To strengthen the construction of a bridge in masonry was introduced a special firming solution and were replaced sleepers and rails. The appearance, however, remains unchanged, as the viaduct is on the list of World Heritage by UNESCO and the change in appearance is prohibited.
During several months of active restoration work, and the work did not stop even at night, the trains did not stop walking on your schedule, however machinists passing over the bridge had to reduce speed to 10 km / h. Although there have been such works that can not be done without stopping the movement of trains, for example, replacement of sleepers and rails, they then perform at night. Thus, the entire restoration period viaduct Landwasser remained in working condition. The cost of the restoration was - 4.6 million Swiss francs.
Now this line of railways in Switzerland has become very popular and mandatory for tourists from around the world. Especially interesting is itself viaduct Landwasser , which became a symbol of Albuliyskoy railway, which is also from July 7, 2008 is a UNESCO World Heritage Site. The best view of the viaduct is opened from the outside, for example, for passengers traveling on the railway line Davos - Filisur. Every day, over this bridge passes 60 trains and 22,000 trains a year.
flickr/Stefan Rechsteiner
flickr/Geoff Cooke
flickr/Davide Galli
flickr/Duncan Strathie
flickr/fgrsimon
Source - en.wikipedia.org, technologystudent.com
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