Nahe valley bridge
Coordinates: 50 ° 30 ′ 38 ″ N , 10 ° 46 ′ 36 ″ E
 Nahe valley bridge
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| Convicted | Federal motorway 73 | |
| Subjugated | Nahe (lock) | |
| place | Schleusingen | |
| construction | Prestressed concrete box girder bridge |
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| overall length | 435 m | |
| width | 2 × 14.25 m | |
| Longest span | 52 m | |
| Construction height | 3.7 m | |
| height | 30 m | |
| building-costs | € 10.1 million | |
| start of building | 2005 | |
| completion | 2007 | |
| location | ||
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The Nahetal Viaduct or Nahetalbrücke is a 435 m long bridge on the A 73 motorway .
The structure is located near Schleusingen between the Schleusingen and Eisfeld- Nord motorway junctions . It spans the Nahe valley with the Nahe river and two farm roads at a maximum height of 30 m . The bridge, which is curved in plan, has a cross slope of 2.5%. The overpass with two separate superstructures was built between 2005 and 2007.
Substructures
The full cross-section of the maximum 25 m high pillars is V-shaped. To accommodate the bearings, the octagonal cross-section at the pier head expands 7.8 m below the superstructure into two rectangular cross-sections.
Superstructures
The two adjacent superstructures of the prestressed concrete bridge have the continuous beam as a structural system in the longitudinal direction . In the transverse direction there is a box cross-section with a constant construction height of 3.7 m. The slab is a maximum of 50 cm thick, the inclined walkways 40 cm. The prestressing consists of a mixed construction with internal and external tendons .
The total span for the 9-span bridge is 435.0 m. The western end field spans 44.0 m, the following six openings have spans of 52.0 m, followed by a field with 44.0 m and the eastern end field with 35.0 m span.
execution
The bridge superstructure was constructed using the incremental launching method. The tact basement was at the Eisfeld abutment.
literature
- Proceedings: 16th Dresden Bridge Construction Symposium . March 2006
- Federal Ministry for Transport, Building and Development; Bavarian State Ministry - Supreme Building Authority; Thuringian Ministry of Construction and Transport: Federal motorway A 73 Suhl – Lichtenfels . Documentation 2008, p. 50
