Modular bridge construction

We're speeding up the process of clearing the backlog of bridge renovations.

Assembly of a modular bridge with two cranes over a running motorway during a short closure

Modular bridge construction – systematic planning, precise implementation

In Germany, approximately 80 percent of small and medium-sized bridge structures are considered in need of renovation. The need for solutions that can be implemented quickly and reliably is correspondingly high. Many structures must be renewed while traffic continues to flow and available construction time is limited. At the same time, the demands on planning reliability, logistics, and feasibility are increasing.

Modular bridge construction with a systematic process approach

This is exactly where the STRABAG modular bridge comes in. We work with a modular system approach, a high degree of prefabrication, and standardized processes. We integrate planning, manufacturing, transport, and assembly at an early stage. This enables STRABAG project teams to prepare projects reliably and execute them precisely. Our approach is designed not to view the individual steps in isolation, but as a continuous, coordinated process.

Assembly of prefabricated abutment walls in modular bridge construction on the construction site

Abutment walls are assembled as precast elements delivered to the site.

For STRABAG, prefabrication in bridge construction begins as early as the planning phase

As early as the initial planning phase, we determine how the individual components—such as abutments or bridge girders—will be manufactured, transported, and assembled on-site. At STRABAG, we not only develop structural solutions but also incorporate the subsequent on-site processes into our planning. This reduces risks at the interfaces and improves the manageability of the entire construction process.

Lifting a prefabricated bridge girder by crane on the motorway construction site

The composite precast bridge girder is delivered just in time via heavy- ation.

Bridge construction during short closures and while traffic continues

Our modular approach is particularly well-suited for bridges in heavily trafficked networks or for structures that can only be replaced during short road closures. We precisely coordinate technical solutions, logistics, and installation to ensure reliable execution while keeping traffic disruptions to a minimum.

Pilot project on the A1: STRABAG builds first modular bridges for DEGES

Our pilot project on two bridges on the A1 near Lengerich in northern North Rhine-Westphalia demonstrates how we put our modular system logic into practice. The client is the German Motorway Corporation (DEGES). From the foundation to the finished bridge deck, the STRABAG project team needed just four months. The highway had to be closed for only two weekends for the modular renovation of the two bridges. The project demonstrates how we can systematically accelerate upcoming bridge renovations using modular construction under real-world conditions.

This year, additional modular bridges will be put out to tender in Germany to drive forward the urgently needed modernization of the infrastructure. We are contributing our experience to these developments and continuing to advance the application of this approach.

Installation of a modular bridge girder with cranes over running infrastructure

The bridge support is installed with precision.

The most important facts about modular bridge construction at a glance

What makes modular bridge construction unique?
Through standardization, prefabrication, and closely coordinated processes, the STRABAG modular bridge can reduce construction time by up to 50 percent compared to conventional methods. Planning, manufacturing, transport, and assembly are integrated at an early stage so that projects can be reliably prepared and efficiently implemented.
- Greater predictability in the project workflow
- Shorter and better-prepared construction phases
- Greater feasibility under challenging conditions
- Greater certainty at the transitions between project phases
Why is early planning so important in modular bridge construction?

Even in the early planning phase, consideration is given to how individual components will be manufactured, transported, and assembled on-site. This not only defines structural requirements but also systematically prepares for subsequent on-site processes.
For which projects is the modular approach particularly suitable?

The STRABAG modular bridge is particularly suitable for bridges in heavily trafficked networks and for structures that can only be replaced during short road closures. It is precisely in these situations that it is crucial to closely coordinate construction time, logistics, and assembly. This allows important infrastructure to be replaced quickly and reliably.