Bearings & joints
Refurbishment of a tourist railway in the Kalavrita valley has required engineers in Greece to come up with some imaginative solutions. Narrow and restricted access, steep slopes and historic structures made the contract, to replace bridge bearings and improve the seismic response of the structures on the line, particularly challenging.
Minneapolis bridge was identified as fatigue risk
The I-35 highway bridge in Minneapolis which collapsed on 1 August killing at least nine people and injuring more than 60 was identified as being at risk of fatigue failure as far back as 2001. An evaluation of the bridge deck carried out by researchers at the University of Minnesota on behalf of the Minnesota Department of Transportation found that the bridge truss had 'many poor fatigue details' on the main truss and floor truss system.