Donges is now part of this exhibition
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On your marks, get set, go!
Construction Site Update from the Pfaffendorf Rhine Bridge in Koblenz
After the steel components of the southeast side span were hoisted into place and welded, the side span—weighing approximately 1,000 tons—was moved from the northern axis to the southern axis of the side span and positioned there with precision.
The shift was carried out on specially constructed sliding tracks on the eastern pier and the eastern abutment. Strand hoisting systems were used. The associated strand hoists were anchored via solid support beams on the pier and the abutment.
This marks the achievement of another important milestone in the “Pfaffendorfer Bridge” construction project.
At the same time, the conditions for hoisting the final side span have been created. This northeast side span will be hoisted into place using a floating crane starting in late May 2026. To date, approximately 3,000 tons of the river bridge’s steel structure have been installed. Further work on the steel structure is expected to continue through the fall of this year. Concrete work on the deck slab will then begin.
#SteelConstruction #BridgeConstruction #PfaffendorferBridge #Koblenz #RhineBridge #CivilEngineering #Assembly
Boys and Girls Day: A look behind the scenes at Donges SteelTec
Once again this year, we took part in Future Day 2026 and were delighted to welcome numerous curious young talents starting from 5th grade onwards to our company, Donges SteelTec.
The participants had the opportunity to look over our colleagues’ shoulders to gain initial insights into various areas and were free to ask questions at any time. In addition to learning about the theoretical aspects of work in the technical office and administration, they were also able to gain hands-on experience in our workshop.
A particular highlight was the tour of our production hall. The large cranes, which move steel using magnets, drew looks of amazement.
The students also had the chance to get creative. In the technical office, they designed signs on the computer featuring the first letters of their names, which they then got to spray-paint and decorate in the workshop exactly as they liked.
For those less enthusiastic about hands-on activities, our IT department offered exciting insights—after all, it’s there every day to help us out of a jam. 😉
Of course, we didn’t neglect the hungry bellies: In our cafeteria, everyone could recharge with a quick snack.
We’re thrilled to be part of this important Future Day and to inspire young people early on about the diverse and interesting opportunities at our company!
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- First, a little briefing for the students.
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- In the technical office, you could see components being designed on the computer.
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- Here, the students were also able to get actively involved.
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- A tour of the production facility showed how heavy steel components are welded.
Donges moves new cable-stayed arch bridge into final position for Deutsche Bahn. Milestone reached in the infrastructure project in Bad Camberg.
On 31 March 2026, the new railway viaduct was successfully moved into its final position in Erbach (Bad Camberg).
The approximately 62.5 m long and 13.5 m wide arch-truss structure, with a total weight of around 800 tonnes, was constructed as part of the Bad Camberg–Erbach–Würges bypass. The installation took place during a temporary track closure in the early hours of the morning and was completed on schedule.
Using self-propelled modular transporters (SPMTs), the fully pre-assembled bridge was picked up from the assembly site, hydraulically lifted and moved with millimetre precision over the abutments into its final position. The soft ground posed a particular challenge, which was addressed by using load-distributing steel plates along the route.
The successful implementation was only possible thanks to the close cooperation between the Donges SteelTec / Albert Weil consortium and the client, as well as the precise preparation of the installation process.
The steel structure consists of a total of 40 prefabricated individual components, which were manufactured at the Donges plant in Darmstadt and subsequently pre-assembled and welded on site.
Yet another fine example of precise engineering and coordinated construction processes in infrastructure engineering.
#archbridge #DeutscheBahn #DongesSteelTec #steelconstruction #bridgeconstruction #infrastructure #teamwork #consortium #badcamberg
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- Cable-stayed bridge for Deutsche Bahn
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- Fully pre-assembled bridge from the assembly site
Modern civil engineering, high-performance mobility and strong partnerships
On 13 March 2026, the new Elsen Bridge was officially opened by the Berlin Senate.
We at Donges SteelTec are proud to have delivered the new Elsen Bridge as part of our joint venture with Eurovia and VIA Structure.
As the lead partner responsible for steel construction, assembly and corrosion protection, as well as the assembly planning for the complex longitudinal shifts and the floating-in process, we played a key role in shaping one of Berlin’s most significant infrastructure projects to date.
🔩 Our contribution to the new Elsen Bridge:
• Workshop and assembly planning, as well as the fabrication of the entire steel structure weighing around 1,450 tonnes.
• Precise precision work under extremely demanding time and logistical constraints
• Close and collaborative coordination within the consortium
• On-time delivery despite challenging logistical conditions
The new Elsenbrücke not only connects Friedrichshain and Treptow, but also stands for modern engineering, efficient mobility and strong partnerships.
🙏 A big thank you goes to our entire team and to all our colleagues in the consortium. Together, we have shown that it is possible when expertise, precision and collaboration come together at the highest level.
#Elsenbrücke #Berlin #DongesSteelTec #SteelConstruction #BridgeConstruction #Infrastructure #Teamwork #Consortium #Eurovia #ViaStructure
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- Complex longitudinal displacements and the settling process
Successful installation of the new railway viaduct in Rüsselsheim am Main
On 27 February 2026, the new railway viaduct was installed in Rüsselsheim am Main.
The two trough bridges, each approximately 25.00 m long and around 5.50 m wide, were transported from the manufacturing site in Darmstadt to the installation site on Bonner Straße during the night of 26 to 27 February 2026. The footway structures and the railings had already been pre-assembled at the factory, so that only the lifting of the structures was required on site.
The steel superstructures, each weighing approximately 90 tonnes, were moved into their final position using a project-specific assembly girder (auxiliary structure). The lifting was carried out using a mobile crane in a so-called single-lift procedure, during which the superstructures were set down onto the abutment benches manufactured by Adolf-Lupp GmbH.
Within around six hours, both trough structures were hoisted into place, aligned correctly and secured in their final position, allowing subsequent construction work to continue without delay.
Despite the confined space, the assembly team from Donges SteelTec GmbH succeeded in precisely positioning the steel superstructures. The existing torsion beams and the cable routes running beneath them posed a particular challenge, as they significantly restricted the available working space.
Donges SteelTec GmbH is delighted to continue driving forward the transport transition in infrastructure, both regionally and in the area surrounding our Darmstadt site, through smaller projects as well.
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- Lifting of the bridge sections
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- Side view of the beautiful steel structure
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- bridge cross-section
Great joy in the Ahr Valley – a return to normality.
After the flood disaster in 2021, large sections of the Ahr Valley Railway between Remagen and Ahrbrück were destroyed. After four years of intensive construction work, the Ahr Valley Railway resumed operations on 12 December. The local population is delighted about the reopening of this important railway line. Many people attended the official opening of the railway line and applauded as the first train set off.
‘We build for the Ahr Valley’ was our motto after Donges SteelTec was commissioned to manufacture and assemble nine railway bridges and two foot and cycle bridges. A total of 4,300 tonnes of steel were used in the steel trough bridges alone. Donges SteelTec’s scope of services also included workshop and assembly planning as well as all corrosion protection services, bearings, transition structures and railings.
We are delighted to have contributed to the reconstruction of the Ahr Valley and are convinced that the decision to build the new bridges in a sustainable steel construction represents an additional measure to increase resilience to possible future flooding.
A big thank you to all our employees who helped to complete this ambitious project on schedule.
Assembly work completed for the new north-western section of the Elsen Bridge in Berlin
An important stage in the construction of the new Elsen Bridge was successfully completed on 15 October. The central section of the bridge, which connects the Berlin districts of Friedrichshain-Kreuzberg and Treptow-Köpenick, was pre-assembled on the construction site, transported onto the pontoon with the aid of two SPMTs (Self-Propelled Modular Transporters) and then floated into its final position across the closed Spree river with great precision by our assembly team. The 400-tonne steel structure was then hoisted into position using strand jacks attached to the steel superstructures on the land side.
Donges SteelTec has been commissioned to manufacture, deliver and assemble the steel structure for the 155-metre-long bridge, which weighs a total of 1,500 tonnes. The steel parts were manufactured at our plant in Darmstadt and transported to Berlin by heavy-duty transporters. In the coming weeks, the central section will be aligned, welded and coated with corrosion protection. This will be followed by the remaining work and the connection of the roadway to the existing structure.
Donges SteelTec honours long-standing employees
‘In our fast-paced world, it has become rare for people to spend their entire working lives in the same job and, what’s more, with the same employer. This makes it all the more important to value the loyalty and reliability of long-standing employees,’ said Dr. Wolf Cornelius, Managing Director of Donges SteelTec GmbH, as he introduced the ceremony honouring six employees celebrating company anniversaries. Three employees have been with the company for 40 years, and three others have been working for Donges for 25 years.
Dr. Wolf Cornelius personally honoured all those celebrating their anniversaries with great appreciation, accompanied by individual laudatory speeches and lovingly selected gifts.
We would like to express our sincere thanks to all those celebrating their anniversaries for their loyalty and commitment to our company and wish them all the best for the future!