Detailed assessment of the steel inside Sõpruse sild (Friendship bridge)

Renovation work is planned to take place until early 2027 to strengthen Sõpruse sild (Friendship bridge) is the longest publicly accessible bridge in Estonia, and extend its lifetime.   The contractors AS TREF and AS TREF Nord identified that the post-tensioning strands of the main girders of 33m spans were in poor condition. Therefore, the planned strengthening works might not be possible. Before they could proceed, they urgently needed a detailed assessment of the remaining steel inside the 12 bundles of prestressed strands.    

Muon Flux Technology was chosen to complete the assessment, as it is the only sensible investigation solution that can see through multiple layers of reinforcement. Check out the full case study and see the results.