The project brought together a consortium of sustainability pioneers, which we’re proud to be part of. Heijmans provided the project leadership and construction expertise, HCM Cement supplied the optimised cement formulation, Van der Kamp B.V. managed concrete production, CarStorCon® Technologies contributed biochar integration, Urban Mine provided recycled aggregates and together with Paebbl materials, this have set a new standard for circular, carbon-neutral structural concrete in the Netherlands.

The pedestrian bridge measures 7 metres long, and achieves what was previously considered impossible in structural construction: a fully CO₂-neutral concrete mix containing 75% circular raw materials, with no primary sand or gravel. The concrete easily hit its strength requirements, demonstrating that sustainability does not compromise with structural performance.

In this project, 30% of traditional cement was replaced with carbon-storing Paebbl materials, our highest replacement rate in structural concrete to date. The bridge deck permanently sequesters 66 kg of CO₂ with Paebbl materials.

This pedestrian bridge demonstrates that carbon-storing materials aren't just viable for decorative or non-structural uses, they're ready for real infrastructure.