Langwieser Viaduct
The Langwieser Viaduct (or Langwies Viaduct; German: Langwieser Viadukt) is a single track reinforced concrete railway bridge spanning the Plessur River and the Sapünerbach, near Langwies, in the Canton of Graubünden, Switzerland.
Langwieser Viaduct Langwieser Viadukt | |
|---|---|
View from the south | |
| Coordinates | 46°49′03″N 09°42′18″E |
| Carries | Rhaetian Railway |
| Crosses | Plessur River, Sapünerbach |
| Locale | Langwies, Switzerland |
| Official name | Langwieser Viadukt |
| Owner | Rhaetian Railway |
| Maintained by | Rhaetian Railway |
| Characteristics | |
| Design | Arch |
| Material | Reinforced concrete |
| Total length | 284 m (932 ft) |
| Height | 62 m (203 ft) |
| Longest span | 100 m (330 ft) |
| History | |
| Construction start | 1912 |
| Construction end | 1914 |
| Opened | December 1914 |
| Location | |
It was designed by Hermann Schürch and constructed between 1912 and 1914 by Eduard Züblin for the Chur–Arosa railway. At the time of its completion, the Langwieser Viaduct was the first railway bridge anywhere in the world made of concrete to possess a span of 100 meters, as well as the first railway bridge of such a scale to be made of concrete.
Presently, the Langwieser Viaduct is owned and used by the Rhaetian Railway; it remains the biggest bridge on the company's network. It has also been listed as a Swiss heritage site of national significance in light of its status as a pioneering reinforced concrete structure.