Why BIM shouldn't stop at the construction site border

A road or railway line can now be digitally planned in detail. Axes, gradients, drainage, pipelines, or construction ground are available as structured information, and different specialist models can be linked together. However, the digital process does not end with planning. What is crucial is what happens to this data once the model becomes a real construction site. At this interface, different systems and working methods meet. Planning statuses are exported, data for surveying or machine control is prepared, and every change must be reliably transmitted to the construction site. The larger and more complex an infrastructure project is, the more important a continuous data flow becomes.

From specialist planning to a joint model

ProVI relies on a common digital basis right from the planning stage. The software is geared towards traffic and infrastructure projects and represents terrain, construction ground, axes and gradients, route models, drainage, and pipelines and utilities, among other things. In the railway sector, disciplines such as overhead lines or platforms are added. This allows specialist information to be viewed in context and dependencies to be considered early on. External models can be integrated via IFC or CityGML, for example. For data exchange, ProVI also supports formats and standards such as LandXML, CPIXML, OKSTRA, or ISYBAU. Changes to the routing can be carried on within the model without having to repeatedly rebuild interconnected information.

When planning reaches the construction site

The actual practical test begins when the data leaves the planning environment. This is where Infrakit comes into play. The platform makes digital planning information available for construction execution. Models can be visualized on mobile devices, used for surveying work, or transferred to machine controls. Construction management, surveyors, and machine operators access the same project information. This is particularly relevant for large infrastructure projects. On kilometer-long road or rail projects, several teams and machines often work simultaneously on different sections. Changes must, therefore, arrive quickly and clearly where they are to be implemented. Infrakit combines BIM models, machine control, survey data, and field documentation in a shared environment.

From planned to as-built

The process becomes interesting in the opposite direction as well. New information is generated on the construction site: survey points, machine and terrain data, or information on the actual built state. Such as-built data can be compared with the planning model and continuously documented. This is especially important for parts that are no longer visible later – such as pipes, drainage, or base layers. What has been installed can be digitally recorded and reused for later project phases.

This also changes the role of the BIM model. It is no longer just the result of the planning that is handed over before construction starts. Ideally, the digital data stock accompanies the project continuously – from planning through machinery and surveying to documenting the built state.

How this workflow works in practice is demonstrated by ProVI and Infrakit at the BIM World Munich 2026 at Stand 36 in the foyer.