Clubley, S.K. and Winter, S.N.
On the fatigue and fracture of site splice welds at the River Mardle Viaduct
Engineering Failure Analysis, 10, (5), . (doi:10.1016/S1350-6307(03)00022-0).
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The River Mardle Viaduct is a curved, twin box girder bridge, spanning a total length of 177 m. Four continuous
spans carry the A38 trunk road over the River Mardle and Old Totnes Road. The bridge forms an important part of
the heavy load network in and out of the tourist areas of Devon and Cornwall. In September 2001, an initial inspection
of the site splice welds joining the box girders detected a series of large imperfections. These weld defects were confirmed by a further independent inspection 6 months later and the results subsequently analysed using detailed fracture mechanics. The results of the fatigue analysis and the implications to the structural integrity of the bridge are discussed in this paper.
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