In June 2013, Engineers from Infrastruct AMS Limited carried out a Special Inspection of Beaver Row Footbridge. Beaver Row Footbridge is a two span pedestrian bridge over the River Dodder in Dublin City. The structure has a wrought iron lattice superstructure and the deck is formed with curved plates spanning between wrought iron angles tied with transverse plates. The bridge spans between two masonry abutments and it has a central cast iron hollow pier.
The Special Inspection included
- Dimensional survey of the bridge at specified locations;
- Ultrasonic thickness measurements at multiple points on the structure to develop thickness profiles of the main structural members;
- Portable hardness measurements to enable estimates of the in-situ tensile strength of the wrought iron members;
- Detailed report on the findings.
The results of the Special Inspection will influence the structural assessment and if needed aid in the development of a cost-effective rehabilitation strategy for the bridge.