Osian Richards

Senior Engineer, Ymgynghoriaeth Gwynedd Consultancy (YGC)

Osian is a Senior Engineer with YGC – Gwynedd Council and works in the asset management team. As Gwynedd we manage 2500 highway structures as well as undertaking design, assessment and investigation work for other highway authorities, including PTSI program and Management of Substandard Structures.

Osian is also the Chair for the CSS Wales Bridge group and the structures lead for the Highway Asset Management Project for CSS Wales.

My Sessions at Bridges 2026

Thursday 12 March 2026

11:50

Muon Tomography in Practice: Revealing the Hidden Details of Llanrhystud Bridge

11:50 - 12:10

  • Llanrhystud Bridge on the A487 faces uncertainty due to missing drawings and undocumented post-tensioning and reinforcement.

  • Conventional investigations (GPR, coring) failed to confirm these details, limiting structural assessment.

  • Muon tomography, proven in Structures Moonshot, was deployed for the first time on a live UK bridge to deliver deep, high-resolution internal imaging.

  • The presentation covers the on-site deployment, key challenges, and insights from the measurements.

  • It also offers a customer perspective, outlining lessons learned and future applications for ageing, undocumented assets.

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