Dahlhausen floating bridge

from Wikipedia, the free encyclopedia

Coordinates: 51 ° 25 ′ 16 ″  N , 7 ° 8 ′ 49 ″  E

Dahlhausen floating bridge
Dahlhausen floating bridge
Official name Dahlhausen floating bridge
use Pedestrian and road bridge
Convicted Street on the Stade
Subjugated Dysentery
place Bochum and Hattingen
construction Floating bridge
overall length 89.4 m
Longest span 21 m; 30 m; 24 m
vehicles per day about 3500
building-costs 550,000 DM
start of building 1898 (1st building)
February 13, 1958 (2nd building)
completion 1899 (1st building)
March 1, 1959 (2nd building)
toll 5 Pfennig (1st construction)
location
Dahlhausen floating bridge (North Rhine-Westphalia)
Dahlhausen floating bridge
Above sea level 59  m

The floating bridge Dahlhausen (formerly also called Eggemannsche floating bridge) is a pedestrian and road bridge over the Ruhr on the city limits between Bochum and Hattingen . Its northeast half is in the Dahlhausen district of Bochum , its southwest half in the Dumberg district of Hattingen .

The road leading over the bridge connects Bochum via the Hattinger urban area with the Essen district of Burgaltendorf and, via a junction, with the Hattingen villages of Dumberg and Niederwenigern .

history

A first pontoon bridge at this location was opened in the spring of 1899. Previously, a ferry had taken over the transport of wagons and people. The widow of the landlord Eggemann from Duisburg received the permit to build the bridge in Düsseldorf . On the Dumberger or Altendorf side - the Essen district of Burgaltendorf was the independent municipality of Altendorf (Ruhr) until it was incorporated in 1970 - there was a ticket booth with a barrier. The state approved fee was 5 pfennigs, which earned it the popular name of the 5 pfennigs bridge .

The bridge was badly damaged in the Second World War on May 18, 1943 ( bombing of the Möhne dam) and only temporarily rebuilt. In 1959 it was finally replaced by the current bridge about 50 meters further downstream for 550,000  DM construction costs (around € 1,302,000 in today's purchasing power  ). The companies Krupp Maschinen- und Stahlbau Rheinhausen and Gockel & Niebur were significantly involved in the construction.

technology

The 89.4 meter long and 146.8 ton heavy bridge rests on pontoons instead of bridge piers. Depending on the water level, it changes its altitude. In the event of high water, it is closed for safety reasons. A permanent bridge is hardly feasible at this point, as the banks would have to be raised by a few meters for this. Furthermore, the pontoons improve the drainage of the Ruhr water.

The bridge is constructed in such a way that it is possible to swing out part of the bridge in order to make the Ruhr passable for shipping. The southern part of the bridge can be swiveled upstream by means of cable winches, enabling ships to enter the Dahlhausen Ruhr lock , which is around 200 meters away .

Road traffic over the single-lane bridge is regulated by a traffic light. Problems with the bearings and bolts of the bridge made it necessary from October 2005 to introduce a speed limit of 10 km / h for the approximately 3,500 cars every day .

After it was closed at the end of summer 2011 due to urgently needed renovation work, the bridge was reopened on November 18, 2011. The width of the passage was narrowed by structural measures (concrete base, beacons). Due to some accidents, the bridge was closed again a day later.

  • Pontoon in the lead

  • Driveway to the bridge

  • at high tide

In 2013, the Ruhr Regional Association added swimming bridges and sluices to the route of industrial culture. The bridge has been a listed building since July 2014.

From February 16, 2018, the bridge was again closed to all motorized traffic after a failed drive attempt, as many motorists did not obey the traffic rules. The bridge has been accessible again since 2019 after further structural changes were made. Vehicles that enter the system despite a red light are detected by speed cameras. For example, backlogs across the level crossing on the Bochum river bank should be prevented.

See also

literature

  • Christoph Schmitz: The Ruhr bridges. Ardey Verlag, Münster 2004, ISBN 3-87023-311-7 , pp. 398-399.

Web links

Commons : Dahlhausen swimming bridge  - collection of images, videos and audio files

Individual evidence

  1. ^ History of Burgaltendorf ; Retrieved July 12, 2015
  2. ^ Pontoon bridge between Bochum and Hattingen becomes a monument - WAZ.de
  3. ↑ Attempt to drive failed - pontoon bridge closed from Friday . ( waz.de [accessed February 15, 2018]).
  4. ↑ The floating bridge in Bochum-Dahlhausen is open to traffic at the end of April . ( waz.de [accessed June 14, 2019]).