Old Saale Bridge Jena-Burgau
The Alte Saalebrücke Jena-Burgau is a 142.4 meter long stone arch bridge from 1534 that spans the Saale in the Jena districts of Burgau and Lobeda .
history
In 1484 a wooden bridge was first mentioned as part of a trade route in this place. In 1491, Hans Münch von Würghausen began to convert it into a stone arch bridge, which was completed in 1534 with the addition of three arches. After it was destroyed in the Thirty Years War (1637), it was rebuilt in 1706; after further renovations, it was given its current appearance in 1744. The Pennickental cable car passed over the bridge on the east side from 1915 to 1938, and a wooden structure protected the bridge users from rock falling from the cable car. Until the construction of a new Saale bridge in the 1930s, all traffic to and from Lobeda ran over the Burgau Bridge. A simple traffic light circuit was therefore used.
During the Second World War on April 12, 1945, the Wehrmacht blew up arches two, three and four. Complete reconstruction was not carried out for decades. Instead, the bridge was given a temporary wooden structure over the destroyed arches and from then on served only as a pedestrian bridge; In the 1970s, a steel footbridge was also built about 100 m south of the old bridge. In 1983 the temporary structure was closed and the unused bridge fell into disrepair, but there was resistance from the population against a complete demolition. In 1992, an “Association for the Rescue of the Old Jena-Burgau Bridge” was founded, and work began on securing the substance of the bridge. In 2001, the reconstruction of the bridge with the three arches over a length of 55 meters began, which was completed on October 3, 2004 after a ceremonial clearance as a pedestrian and cycle path bridge.
construction
The rows of vaults with the geometry of a semicircular arc are placed on the pillar bases, which means that all vaults normally remain dry when the water level is medium. Pillar base templates, wedge-shaped upstream and rounded downstream, increase the stability of the bridge. Terabratel limestone and occasionally red sandstone were used as natural stone . The maximum 9 m high natural stone bridge has nine arches with a clear width of 4.1 to 11.7 m (arch 4). The maximum width is 5.1 m, the width of the carriageway approximately 3.3 m. The construction height at the apex of the arch is approximately 1.0 m. The three rebuilt arches are made of reinforced concrete and are 4.8 m wide and 0.6 m thick.
See also
literature
Web links
Individual evidence
- ↑ Jonathan Carl Zenker : Historical-topographical pocket book of Jena and its surroundings, especially in natural science and medical relationship. With the plan from Jena and a geognostic profile . Frommann, Jena 1836, p. 141 .
- ↑ 100 years of Jena in the photo. Pictures from the new Jena. jena-information 1986, signature for picture 75
Coordinates: 50 ° 53 ′ 44 " N , 11 ° 35 ′ 56" E