Castle Cornet Bridge, Guernsey

Following a successful alternative tender, we assessed the condition of the structure by undertaking a range of concrete tests.  We then built a deteriorated state Finite Element Analysis (FEA) model of the bridge and confirmed the model’s accuracy by installing a series of fibre optic strain sensors and performing a number of dynamic load tests. We are providing ongoing structural health monitoring which is maintaining access to the historically and culturally significant castle and breakwater.

McFarland Consulting Engineers initially undertook a visual, geometric and delamination survey of the bridge and performed a series of Non-Destructive Tests (NDT) which included:

After we determined the condition of the structure, we built a Finite Element Analysis (FEA) model of the bridge to locate areas exhibiting the greatest stresses.  We then installed a number of fibre optic sensors at these locations and undertook load testing which helped calibrate our FEA model.  These sensors have remained in place which are used to determine the ongoing performance of the structure.