Tranebergsbron
Tranebergsbron is a combined car and metro bridge in Stockholm . It spans the Tranebergssund and connects the districts of Kungsholmen and Traneberg .
history
As early as 1787, Gustav III. to build a bridge around this point. It became a kind of pontoon bridge , which was replaced by another pontoon bridge around 1850. The first fixed bridge followed at the beginning of the 20th century, it could be opened and carried the load of trams. However, the rapid population growth in west Stockholm soon called for an even larger bridge.
Today's bridge
Tranebergsbron (the Traneberg Bridge) was opened on August 31, 1934 after three years of construction. It is an arch construction made of concrete with two parallel arches, 181 meters long. At that time, this span was the longest concrete arch bridge in the world. The falsework consisted of two steel arch halves that were pulled to the construction site by a pontoon, pulled to the correct height by a lifting tower and then connected.
The Traneberg Bridge is a total of 450 meters long, the clear height is 25.2 meters, it is only 80 cm lower than the Västerbron . As with Västerbron , which opened the following year, the structural engineers were Ernst Nilsson and Salmon Kasarnowsky and the architects were Paul Hedqvist and his partner David Dahl .
The heavy traffic and the winter road salt gradually led to extensive damage to the bridge. Heavy traffic therefore had to be restricted in the mid-1990s. Finally, it was decided to build another, third bridge arch and to thoroughly renovate the existing roadways and retaining walls right up to the arches, which was practically the same as rebuilding these parts. Work began on February 22, 1999, and on August 31, 2005, the "new" Tranebergsbron was ceremoniously re-inaugurated by the Crown Princess Victoria . The cost was around 90 million euros.
Picture gallery
Literature and source
- Stockholms Byggnader, Bokförlaget Prisma, Stockholm 1977
Web links
Individual evidence
- ↑ Leonardo Fernández Troyano: Bridge Engineering. A global perspective . Colegio de Ingenieros de Caminos, Canales y Puentes; Thomas Telford, London 2003, ISBN 0-7277-3215-3 , pp. 335 ( limited preview in Google Book search).
Coordinates: 59 ° 20 ′ 1 ″ N , 17 ° 59 ′ 42 ″ E