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Environmental and economic benefits of UHPFRC intervention in bridge management for the Swiss network
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  • Published: 04 February 2026

Environmental and economic benefits of UHPFRC intervention in bridge management for the Swiss network

  • Numa Bertola  ORCID: orcid.org/0000-0002-4151-31231,
  • Célia Küpfer  ORCID: orcid.org/0009-0005-1718-48402,3 &
  • Eugen Brühwiler  ORCID: orcid.org/0000-0003-2321-010X4 

Nature Communications , Article number:  (2026) Cite this article

We are providing an unedited version of this manuscript to give early access to its findings. Before final publication, the manuscript will undergo further editing. Please note there may be errors present which affect the content, and all legal disclaimers apply.

Subjects

  • Civil engineering

Abstract

Current infrastructure management frameworks typically involve replacing bridges at the end of their intended service duration or when significant structural deficiencies arise, resulting in high costs and environmental impacts. Novel structural-strengthening methods using ultra-high-performance fiber-reinforced cementitious composite (UHPFRC) have allowed the preservation of hundreds of bridges in several countries. Their service duration has been extended, and their performance has been improved to match that of a new structure. Examining the Swiss federal network (3903 bridges), it is found that interventions using the UHPFRC method are feasible on more than 99.7% of structures, demonstrating that the structural intervention can be technically applied to most bridges in this network. On the given case study, systematically applying the UHPFRC method would lead to savings of up to 7.7 MtCO2eq, and 18.5 billion CHF over the next 80 years compared to current engineering practice. This study highlights the significant potential of systematically implementing the UHPFRC method for sustainable and cost-effective infrastructure management.

Data availability

The input datasets (i.e., bridge condition data) used in this study are not publicly available due to confidentiality agreements with bridge owners. However, datasets generated and analyzed during the study (i.e., bridge replacement scenarios, cost and carbon savings, and case study results) are available from the corresponding author upon request. Source data are provided with this paper.

Code availability

Carbon and cost-saving potential algorithms are available as Supplementary Code 1.

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Acknowledgements

The authors are thankful for the data and input provided by Dr. Dimitrios Papastergiou and Charles-Henry Demory (Federal Roads Office FEDRO) and Dr. Marian Ralbovsky (Austrian Institute of Technology).

Author information

Authors and Affiliations

  1. Department of Engineering, Faculty of Science, Technology and Medicine (FSTM), University of Luxembourg, Esch-sur-Alzette, Luxembourg

    Numa Bertola

  2. Peter Guo-hua Fu School of Architecture, Faculty of Engineering, McGill University, Montreal, QC, Canada

    Célia Küpfer

  3. Structural Xploration Lab, Institute of Architecture, School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), Fribourg, Switzerland

    Célia Küpfer

  4. Institute of Civil Engineering, School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland

    Eugen Brühwiler

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  1. Numa Bertola
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  2. Célia Küpfer
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  3. Eugen Brühwiler
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Contributions

N.B., C.K., and E.B. contributed to the conceptualization of the study. N.B. and C.K. performed the analyses. N.B. developed the code and drafted the manuscript. All authors reviewed and approved the final version.

Corresponding author

Correspondence to Numa Bertola.

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Bertola, N., Küpfer, C. & Brühwiler, E. Environmental and economic benefits of UHPFRC intervention in bridge management for the Swiss network. Nat Commun (2026). https://doi.org/10.1038/s41467-026-69103-x

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  • Received: 05 May 2025

  • Accepted: 22 January 2026

  • Published: 04 February 2026

  • DOI: https://doi.org/10.1038/s41467-026-69103-x

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