Lifting of the new railway overpass

In the night from Good Friday to Saturday the lifting of the new railway overpass over the Hattenbergstraße in Mainz took place.

During the day, two 500-ton cranes were used to dismantle the temporary bridges before the assembly of the new bridges could begin in the evening.

The railway overpass consists of three separate superstructures. Each superstructure is designed as a trough bridge with thick plate.  On each of the two outer superstructures a walkway is attached on one side. The span width of the bridges is approx. 22.00 m, the construction height is 1.5 m. Each of the superstructures has a width of approx. 4.50 m. The footpaths have widths of up to 1.35 m.
This resulted in unit weights of up to 135 tons.

The bridges were set down on allowance stacks and then the bearings were cast.

The Hattenbergstraße railway overpass went into operation on schedule.

Floating in the middle segments

Installation of the Schwelmetal bridge successfully started with moving traffic

Darmstadt/Wuppertal, January 29, 2020.

Since the beginning of January, the assembly of the steel structure for the replacement of the substructures 2 and 3 of the Schwelmetal Bridge built in 1960 in the course of the BAB A1 motorway has been in progress.

The Schwelmetal Bridge on the A1 motorway at the Wuppertal-Langerfeld junction spans several electrified railway tracks, public roads and waters. Up to 100,000 vehicles pass through the bridge every day. The two inner sections of the bridge, built in 1959 and 1960, are no longer sufficiently load-bearing due to the decades of stress and strain, especially due to increased heavy goods traffic.

The replacement construction of the bridge will be done “from the inside out”. This is the only way to maintain the traffic on the A1 motorway and on the DB AG track systems located underneath the bridge. The upper construction site on the A1 motorway has been set up as an island construction site.

The steel structure is being assembled using self-propelled transporters (SPMT).

Donges SteelTec has been commissioned with the fabrication and erection of the steel structure for the substructures 2 and 3 with a total span of 207m as well as the application of the corrosion protection.

Second bridge section has been mastered

Darmstadt/Linz 11.12.2019.
On Wednesday, 11.12.2019 the middle section of the second bypass bridge in Linz was successfully erected.
The 950 t heavy and over 90 m long bridge section was moved into position by ship and pulled into the end position by steel cables, just like the first bridge section. Thus, the second bridge section with approx. 3500 t over the Danube was also successfully established . In the coming weeks the assembly of the pylon will take place.

Night mission went according to plan

In the night from 09 to 10 November the new railway overpass in Heppenheim (Bergstraße) was successfully lifted in. Completely manufactured and coated each of the components was transported by truck to the construction site where it was assembled in a tandem lift. The transport length was approx. 18.6 m with a unit weight of up to 100 tons.

Donges SteelTec has been contracted with the manufacturing, delivery and assembly of the steel construction for the railway overpass in Heppenheim, Germany. The railway bridge will span the railway line 3601 Frankfurt – Heidelberg via the federal road B 460 “Lorscher Straße”.

The overpass consists of two separate superstructures. Each superstructure is designed as a trough bridge with thick sheet metal. On one side of each of the two superstructures a walkway will be added.The span width of the bridge is approx. 15.40 m, the construction height 0.8 m. This results in a slenderness of L/H = 19.25. Each of the superstructures is 4.70 m wide. The pavements have widths of up to 1.45 m.

 

Beginning of November 2019, two parts of the bridge for the new railway overpass in Heppenheim (Bergstraße) were transported from Darmstadt to Heppenheim. How the 80-tonne, 18.7-metre long bridges reached their final destination was recorded in a short video…

 

 

The superstructure of the Viaduct Heidingsfeld has reached the other side of the valley

With the sixth and last movement of the 2nd construction phase, the superstructure reached the other side of the valley as planned.

In the coming days preparations will be made for stacking the bridge, which will bring it into its final position. Subsequently, our erectors will carry out the remaining work on the steel structure,

so that by the end of next year the 2nd construction phase will also be completed and opened to traffic.

Second construction phase of the new bridge over the motorway A1 was successfully completed.

Last September weekend, 10 steel girders of the new bridge over the A1 near Köln-Niehl were assembled in two night operations.

The A1 section was completely closed for the entire weekend.

As in the first construction phase, the components manufactured in our workshop in Darmstadt were transported to the construction site by heavy goods vehicles, lifted by a 500 tons crane and placed on prepared support benches.

Fifth movement took place as planned

See the video for details on the move operation.

BR Media Library Video

A45 – New bridges of the B54 arrived at their location

Darmstadt/Haiger, 22.07.2019.
3000 tons of steel construction roll on 384 wheels on the motorway A45 near Haiger.

The two new truss bridges of the B54 near Haiger, each weighing around 3000 tonnes, were successfully driven over the existing A45 motorway during a 50-hour closure on the weekend of Friday, 19 July to Sunday, 21 July and lowered in their final position.

The 96 m and 120 m long steel structures with a weight of 800 tons and 1200 tons, which were manufactured as large components at the Donges SteelTec GmbH plant in Darmstadt, were completely pre-assembled next to the motorway for months, welded and subsequently fitted with a concrete roadway slab.

The superstructures were then stacked up to 9.00 meters and brought to their respective end positions by self-propelled platform module transporters (SPMT).

The manufacturing process and the running-in process are regarded as a unique project in Germany, especially due to the almost complete completion in lateral position.