A presentation conducted by Ms Maria Rashidi, SMART Infrastructure Facility, University of Wollongong. Presented on Wednesday the 2nd of October 2013. The maintenance of bridges as a key element in transportation infrastructure has become a major concern due to increasing traffic volumes, deterioration of existing bridges and well-publicised bridge failures. The main goal of this study is to develop a requirements-driven decision support methodology for remediation of concrete bridges with the aim of maintaining bridge assets within acceptable limits of safety, serviceability and sustainability.The proposed model includes two phases: Phase one is focused on condition assessment and priority ranking of bridge projects which makes use of an integrated priority index addressing a variety of factors. Phase two includes a multi criteria decision making technique which is able to select the best remediation strategy at both project and network level. The modified Simple Multi Attribute Rating Technique (SMART) is used as a decision analysis tool that employs the eigenvector approach of the Analytical Hierarchy Process (AHP) for criteria weighting

1. ENDORSING PARTNERS
A New Approach to
Bridge Infrastructure
Management
The following are confirmed contributors to the business and policy dialogue in Sydney:
•
Rick Sawers (National Australia Bank)
•
Nick Greiner (Chairman (Infrastructure NSW)
Monday, 30th September 2013: Business & policy Dialogue
Tuesday 1 October to Thursday,
Dialogue
3rd
October: Academic and Policy
Presented by: Ms Maria Rashidi, SMART Infrastructure Facility,
University of Wollongong
www.isngi.org
www.isngi.org

2. A New Approach to Bridge
Infrastructure Management
Presented by: Maria Rashidi

3. Research Significance



There are approximately
2.5 million bridges on the
global higher
transportation network.
20% deficient
Almost 500,000 bridges
require remediation and
improvement.

4. Mississippi River bridge collapse



In 1990: A rating of
"structurally deficient,"
citing significant corrosion
in its bearings.
In 2005: Rated as
"structurally deficient"
and in possible need of
replacement.
On August 2, 2007, the
Governor stated that the
bridge was scheduled to
be replaced in 2020.

5. Entre-os-Rios Bridge Collapse



Collapsed in 2001.
The collapse was
caused by the failure
of a support pillar that
came under increased
pressure from river
water following a
period of heavy rain.
70 people were killed.

6. Conceptual Framework for Bridge
Management

7. Rating of All the Contributed Factors

8. Structural Efficiency (SE)

9. Functional Efficiency (FE)

10. Client Impact Factor (CIF)

11. Bridge Overall Priority Index

12. Phase Two: Remediation Planning

13. Possible Alternatives

14. Major Risks and Client Constraint

15. Typical Hierarchical Structure for Bridge
Management
Main text (font: calibra body, size 24)

16. Remediation Planning at Project Level

17. Remediation Planning at Network Level

18. Prototype System

19. CBR-DSS

20. References
•
•
•
•
•
•
•
•
•
•
Bello-Dambatta, A., Farmani R., Javadi A. A. and Evans B. M. (2009). The Analytical Hierarchy Process for
contaminated land management. Advanced Engineering Informatics 23(4): 433-441.
Freudenthaler. B, Gutenbrunner.G, Stumptner. R, & Kung. J (2008) Case-based decision support for bridge
monitoring, in proceeding of the third international Multi-Conference on Computing in the global information
technology, pp. 31-36.
Rashidi, M. and Gibson P. (2012). A methodology for bridge condition evaluation. Journal of Civil Engineering and
Architecture 6(9): 1149–1157.
Rashidi, M. and Gibson P. (2011). Proposal of a methodology for bridge condition assessment. Australasian
Transport Research Forum (ATRF), Adelaide, Australia.
Rashidi, M. and Lemass B. (2011a). Holistic decision support for bridge remediation. The 4th International
Conference on Construction Engineering and Project Managment (ICCEPM), Sydney, Australia.
Rashidi, M. and Lemass B. (2011b). "A Decision Support Methodology for Remediation Planning of Concrete
Bridges." Journal of Construction Engineering and Project Management (JCEPM) 1(2): 1-10.
Stewart, M. G. (2001). "Reliability-based assessment of ageing bridges using risk ranking and life cycle cost
decision analyses." Reliability Engineering & System Safety 74(3): 263-273.
Sumitomo. (2009). Bridge repair market statistics." from http://www.iceng.com.au/files/link/Bridge-marketstatistics.pdf.
Valenzuela, S., de Solminihac H. and Echaveguren T. (2010). Proposal of an integrated index for prioritization of
bridge maintenance. Journal of Bridge Engineering 15(3): 337-343.
Yanev, B. (2007). Bridge Management. Hoboken, New Jersey, John Wiley & Sons.