- Publication no: ABC2017-105-17
- Published: 26 April 2017
Roads and Maritime Services, New South Wales is responsible for managing over 5600 bridges and bridge size culverts, with a written down value of 12.5 billion and a replacement cost of 18.2 billion. Roads and Maritime bridge stock is the oldest and largest in Australia and comprised of different materials and types. These bridges are inspected periodically by inspectors from different service providers through a three-tier inspection regime. The Level 2 inspection data for each bridge is stored in the Bridge Information System (BIS). This information is critical for the Roads and Maritime maintenance program to identify and implement maintenance action in order to allocate available funds effectively, while improving safety and reliability of journey.
The BIS inspection data and reports need to be regularly audited to eliminate any inconsistencies or deficiencies in inspections and reporting. The audit is risk based and prioritised mainly by three factors, which are i) inspections carried by different service providers ii) materials; such as timber, wrought iron and steel bridges and bridges with step joints, iii) bridge load capacities. The risk based inspection audit identifies deficiencies and inconsistencies in element identification, condition states rating, raising and completing routine maintenance actions (RMAs). This paper will discuss some critical audit findings and will recommend improvements for bridge inspection and data collection to manage bridges safely and effectively.