The Structures’ Moonshot Project, launched by National Highways and led in collaboration with AtkinsRéalis and Jacobs, has concluded the initial phases of its research into cutting-edge non-destructive testing (NDT) technologies. The findings, presented to over 200 international industry delegates, could fundamentally reshape how critical transport infrastructure is monitored and maintained.
Targeting some of the most difficult and costly aspects of structural inspection—such as post-tensioned bridges and buried components—the project highlights the growing potential of NDT technologies to reduce unplanned closures and improve road safety. These technologies allow engineers to assess hidden defects and internal degradation without the need for intrusive, disruptive interventions.
Since August 2023, the research team has conducted over 60 in-depth evaluations, exploring 20 different NDT approaches with support from more than 20 specialist technology companies worldwide. Among the standout innovations is muon tomography, developed by Estonian firm GScan, which enables precise 3D modelling of structural interiors. The technology provides detailed insights into steel and concrete conditions without cutting into or dismantling the structures.
Trials were carried out on purpose-built bridge mock-ups as well as real-world testbeds like parts of the decommissioned A14 Huntingdon Viaduct.
“It is vital that we ensure that first and foremost our structures are safe to use,” said Colin George, Deputy Head of Structures at National Highways. “The technologies we’re looking at have the potential to achieve that goal, but also to ensure we’re spending our funding effectively. As a result, we would expect to see a reduction in planned and unplanned closures on our very busy network.”
Commenting on the broader industry impact, Chris Mundell, Technical Director at AtkinsRéalis, added: “The testing has reinforced the view that there is no ‘silver bullet’ for structural investigations, but NDT technology integration is transforming how we maintain these complex structures. Having completed the first phases largely in controlled environments, we're now looking forward to deploying these technologies on operational structures.”
National Highways currently manages over 20,000 structures across England’s road network, from culverts and gantries to major bridges. With structural interventions often running into millions of pounds, the ability to pinpoint internal deterioration with minimal disruption presents a game-changing opportunity for budget optimization and public safety.
The project now moves into Phase 3, where the tested NDT technologies will be applied across live operational assets. This next stage is slated for completion by mid-2026, and will serve as a real-world validation of these tools in modern infrastructure management.
