!!!Brücken

Bridges: There is a stone bridge dating from Roman times at Lanzing 
near Melk. One of the oldest arched bridges, dating from the 
12%%sup th/%  century, crosses the River Kamp near the monastery of 
Zwettl. In the late Middle Ages three wooden bridges were built across 
the River Danube Vienna (1439), Krems-Stein (1463) and Linz (1497). In 
the 19%%sup th/%  century the construction of railways constituted a 
new challenge for bridge-builders. From 1837 the first wooden railway 
bridge was built for the Northern railway crossed the Danube. Numerous 
arched bridges and 16 major viaducts of the  Semmering Railway show 
that along with wood, stone was long used for the construction of 
bridges. Since the 1860s iron and steel have been used, at first 
mainly for lattice and chain bridges. The  Trisanna Bridge, a semi 
parabolic girder bridge with a span of 120 m and built in 1882/84 for 
the railway across the Arlberg massif won international acclaim. This 
bridge is the longest railway bridge in Austria; in 1964 the old 
construction had to be replaced by a modern girder system ("Langer 
Girder"). The first reinforced concrete bridges were built in 1903 on 
the Karawanken railway line.

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The Reichsbruecke bridge across the River Danube, which was built in 
1937 and collapsed August 1, 1976, and the  Europabruecke Bridge on 
the Brenner motorway (1963) are particularly well known.


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