Lennetal Bridge

Lennetal Bridge
	Lennetal Bridge
use	Federal motorway 45
Subjugated	Lenne , L 674 (Verbandsstraße), Dolomitstraße, track systems
place	Hagen , NRW , Germany
Entertained by	Streets.NRW
overall length	989.9 m
completion	1967
Status	New building from September 2013
	location

51.379722222222 7.5247222222222Coordinates: 51 ° 22 ′ 47 " N , 7 ° 31 ′ 29" E

The Lennetalbrücke of the federal highway 45 ("Sauerlandlinie") is located north of the Hagen interchange in the northeast of the city of the same name in North Rhine-Westphalia (Germany). It is located in the local districts of Berchum , Herbeck and Halden .

History and construction

The almost 1,000 meter long viaduct spans the river Lenne , the Ruhr-Sieg route , works tracks and storage areas of adjacent companies, a light liquid separator ( rain retention basin ), the state road L 674 and the district road K 1 at a height of 20 to 30 meters above the site. The bridge was completed in 1967 as a monolithic frame construction over 22 fields with a total length of 989.9 meters. The prestressed concrete superstructure consists of six longitudinal girders with spans of around 45 meters.

New building

Due to its poor condition, the bridge has to be replaced by a new building. A later 6-lane expansion of the BAB is taken into account when the bridge is rebuilt. The client is the Federal Republic of Germany, represented by the State Office for Road Construction NRW . The contractor is Hochtief Solutions AG in Berlin. The groundbreaking ceremony took place on September 11, 2013. A construction period of 4.5 years and an investment volume of around 105 million euros were expected. However, the final completion is expected to take place at the end of 2020.

execution

The new bridge will consist of a steel box girder of 979.5 meters with a solid reinforced concrete slab as the roadway. In the first construction phase, provisional support pillars were erected west of the existing bridge, which then initially supported a carriageway for the new bridge. During this construction phase, traffic continued to flow over the previous bridge. After the completion of this construction work, traffic has been directed over the new part of the bridge since March 2017. The old bridge is currently being demolished (construction phase 2) and pillars and abutments are being built at the final location of the bridge and the eastern roadway (construction phase 3). A project that is so far unique in Germany is the shifting of the roadway with a total length of almost 1,000 meters to its final location in construction phase 4. Construction phase 5 includes the dismantling of the temporary pillars.

Web links

Commons : Lennetalbrücke (A 45) - Collection of images, videos and audio files

Straßen-NRW - New construction of the Lennetal bridge
Schüßler Plan - Lennetal Bridge
A 45 Lennetalbrücke construction simulation
ZDF report (2015 - available on the ZDF media library until August 2, 2018) about Germany's bridges, their condition and effects on traffic using the example of the new construction of the Lennetal Bridge . From the announcement of the documentary: Five years of construction time was estimated for the new construction of the Lennetal Bridge. It is 1000 meters long and goes over railroad tracks, a road and the river Lenne. Huge, prefabricated steel parts are pushed piece by piece over the valley from two sides. Never before has such a long bridge been moved in this country: "On this scale, this is probably unique in Germany," says project manager Michael Neumann. "It's an amazing project."

Individual evidence

↑ Lennetal Bridge

↑ Bridge upgrading

↑ bast- recalculation v. Bridges in stock ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Dead Link / www.bast.de
^ WDR local time Dortmund
↑ http://www.strassen.nrw.de/projekte/a45/lennetalbruecke.html construction time
↑ http://www.strassen.nrw.de/service/presse/mektiven/2013/130911-05.html construction costs
↑ Stephan Faber: Lennetalbrücke: A gigantic steel puzzle. lokalkompass.de, February 26, 2019. Accessed June 1, 2019.
↑ http://www.strassen.nrw.de/projekte/a45/lennetalbruecke.html

[1] Lennetal Bridge

[2] Bridge upgrading