Neckar Valley Viaduct Untertürkheim
The Neckar Valley Viaduct Untertürkheim is a 1400 meter long combination of several bridges on the federal highway 14 in the Neckar Valley near Stuttgart-Untertürkheim .
history
The plans for a connecting road from the Rems valley to the Neckar valley go back to 1932. Even then, a bridge solution was being considered for the area of the Untertürkheim freight station and the site of what was then Daimler-Benz AG. For this reason, the building permits for all buildings on the Daimler premises until 1985 were always revocable. The Second World War ruined all transport plans, and planning was not resumed until the 1950s. It was to take another 30 years before construction began in 1986.
Today's bridge structures are parts of a turbine- shaped cross that was once planned (B 14 / B 312 with the B 10). The planned southern part has not yet been implemented. ( Filder approach ).
Freight station high bridge
The construction of the bridge began in the summer of 1989, and the 450-meter-long six-lane B-14 bridge crosses the Untertürkheim freight yard at a height of around 20 meters; the longest span is 135 meters (cost: 40 million D-Marks).
50,000 square meters of formwork were processed by the Besemer and Abele consortium, 3,000 tons of steel and 1,000 tons of prestressing steel were used and 28,000 cubic meters of concrete were poured.
All major construction methods in large bridge construction were used on this bridge: precast, cantilever, falsework , incremental launching methods . The “high point” was on October 24, 1991: the last one and a half meters were concreted using the open-air construction method.
The first construction phase of the new B 14 led from Waiblingen to the Benzstrasse junction at the Gottlieb Daimler Stadium . This eight kilometer long road to Stuttgart-Untertürkheim was opened on December 14, 1992. Work on the four-lane road had already started in July 1986, including the almost 1.6 kilometer long and 63 million D-Mark expensive Kappelberg tunnel in Fellbach .
Elevated road bridge
The second construction phase is exactly one kilometer long and cost a total of 76 million Deutschmarks. It includes the 850-meter-long twin bridges with spans of up to 66 meters as a six-lane elevated road bridge through the Daimler company premises at a height of 12 meters, the two Neckar bridges and the two lanes to federal highway 10 , which are drawn apart on parallel ramp bridges .
Neckar bridges and ramps
The two 726 m long separate Neckar bridges cross the Neckar at a height of 10 meters. Directly afterwards, parallel ramp bridges lead to Uferstrasse ( B 10 ) and to the connection to B 14 at Stuttgart wholesale market . This section was opened on December 29, 1994, creating a direct connection from the Remstal into the Neckar valley.
Up to 80,000 vehicles drive this section of the B 14 every day. The total costs for the new B 14 amounted to 302 million D-Marks.
Material of the bridge structures
In the used on the B 14 in Stuttgart red cement is oil shale cement from the oil shale cement plant Rohrbach cement in Dotternhausen . It was developed according to the German-European cement standard and manufactured by grinding red oil shale burned up to 35% from the fluidized bed process that was used to generate electricity. This oil shale burn is automatically hardening hydraulically. The co-grinding corresponds to the earlier approvals of the German Institute for Building Technology and from 1986 the cement standard DIN 1164. The red color of the burn was achieved by operating the fluidized bed process with a high excess of oxygen. In addition, 3% hematitic iron ore from Sishen in South Africa was added to the raw meal given to the furnace to reduce early setting in the factory and to increase the cementite content.
Web links
| Upstream | Crossing the Neckar | Downstream |
| Untertürkheim barrage | Neckar Valley Viaduct Untertürkheim |
King Charles Bridge |
Coordinates: 48 ° 47 '23.7 " N , 9 ° 14' 26.6" E