Goongoongup Bridge Monitoring

Goongoongup rail bridge is a PTA owned structure spanning over the Swan River, between East Perth and Burswood (Armadale Line). Following construction of the bridge in 1995, significant south-westerly movement of the eastern abutment and approach structure was observed. Design allowance for displacement was exceeded, requiring remedial action. Part of assessing the structure and determining appropriate remediation included an ongoing monitoring survey program, established in August 2002. Between September 2011 and October 2012, an anchoring system was constructed on the eastern abutment and approach structure to reduce displacement, after which, periodic surveys were continued to monitor ongoing movement and determine effectiveness of the anchoring design. The PTA requires the services of an engineering consultant to oversee a surveyor to continue monitoring surveying, then report on results and provide feedback.