Strengthening, rehabilitation and widening of the existing arch bridge on National Route 7 over the Olifants River

摘要

The existing arch bridge over the Olifants River presented various defects, including extensive cracking in various parts of the structure, spall damage and expansion joint failure. Innovative methods were employed for repair, including large areas of carbon fibre wrapping, and a novel method of widening the existing deck. Through the use of concrete material specialists and experienced specialist contractors it was possible to meet the client's requirements of extending the service life of the structure.