GScan

GScan's Muon Tomography gives bridge owners something no other inspection method can: a clear, three-dimensional view several metres inside reinforced and post-tensioned structures, without breaking the concrete. Our technology measures how naturally occurring cosmic-rays (muons) as they pass through a structure. Muon detectors placed above and below the element record millions of muon tracks, and our proprietary AI software platform reconstructs them into high-resolution 3D models that detect features accurately down to 3 mm. Reinforcement, post-tensioning tendons, shear links and dowel bars are mapped automatically, with bar and tendon diameters measured to within around 2 mm. Advanced tendon analysis then pinpoints the defects that matter most: incomplete grouting, strand breaks, loss of section and voids. GScan is the only technology that can see inside bridge half joints, delivering as-built analysis of one of the highest-risk and hardest-to-inspect elements on any network. It also succeeds where conventional NDT is defeated by depth, congested reinforcement or waterproofing membranes. At Llanrhystud Bridge in Wales, where GPR surveys and coring had both proved inconclusive, GScan resolved the full tendon and reinforcement layout of a 1.2 m deep deck with no original drawings. Targeted coring guided by the scan then hit every tendon to millimetre accuracy and confirmed the voiding and grouting defect GScan had identified. Independent testing by Germany's BAM found muon tomography provided the most information compared with GPR and ultrasonic methods. Inspections are passive and safe for operators, the public and the structure, run on in-service assets with minimal traffic disruption, and results are delivered through our cloud platform for your engineers to explore, measure and share. Since our first deployment to an in-service bridge in 2025, GScan has scanned 17+ in-service bridges and 2 tunnels across 10 countries, working with clients including Transport Scotland, BEAR Scotland, National Highways, AtkinsRéalis, Jacobs and WSP. The technology has been recognised with the NCE Bridge Awards for Innovation in Bridge Inspection and NCE Digital Construction Product Innovation of the Year 2025 and Bridge Innovation award 2026. Bring us your most challenging structure. We'll show you what's inside.