Visual Inspection Based Maintenance Strategy on Unsealed Road Network in Australia

  • Vasantsingh Pardeshi
  • Sanjay NimbalkarEmail author
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)


Gravel loss on unsealed roads is financially a major setback for all road agencies. The maintenance strategy in Australia is primarily based on visual inspection only which has inherent drawbacks. It is also environmentally unsustainable. Key challenges associated with the unsealed road management are identified as (i) difficulty to forecast behaviour, (ii) significant data collection needs and (iii) vulnerability in level of service & maintenance practices. The quality of gravel material is one of the major influencing factors. Various theoretical models have developed in the past to estimate gravel loss. These studies are used to estimate road deterioration and maintenance strategy in practice. A range of approaches such as regression analysis of field measured data, system dynamic modelling approach, laboratory measurements have been employed in the past. In the state of Queensland of Australia, the long-term gravel loss monitoring is planned in the region affected by frequent flood to assess the amount of gravel loss and associated maintenance issues. Recently, a mammoth maintenance work was undertaken on unsealed road network to cater for gravel loss due to Ex Tropical Cyclone Debbie. Visual inspection can be a useful tool to provide snapshot of unseal road network at a time. Most road agencies still use this visual inspection as a maintenance strategy tool. It is recommended in this study to integrate visual inspection with localised gravel loss model and roughness data. GPS based data can be integrated by using visual inspections, roughness and the gravel model.


Gravel loss Unsealed road Visual inspection Theoretical model 


  1. Australian Rural Roads Group: Going Nowhere: The rural local road crisis Its national significance and Proposed Reforms, Australian Rural Roads Group, NSW, Australia (2010)Google Scholar
  2. Scenic Rim Regional Council (SRRC): 2018–19 Community Budget Report Scenic Rim Regional Council, Scenic Rim Regional Council, Beaudesert, Australia (2018)Google Scholar
  3. Alzubaidi, H., Magnusson, R.: Deterioration and rating of gravel roads: state of the art. Road Mater. Pavement Des. 3(3), 235–260 (2002)Google Scholar
  4. McManus, K.J.: Pavement deterioration models for a local government authority. In Proceedings of 17th ARRB Conference, Part 4, Gold Coast, Queensland, 15–19 August 1994, vol. 17 (1994)Google Scholar
  5. Lea, J.D., Paige-Green, P., Jones, D.: Neural networks for performance prediction on unsealed roads. Road Transp. Res. 8(1), 57 (1999)Google Scholar
  6. Henning, T.F., McCaw, A., Bennet, N.: Assessment process for the condition of unsealed roads. NZ Transport Agency research report 652 (2019)Google Scholar
  7. Henning, T.F., Flockhart, G., Costello, S.B., Jones, V., Rodenburg, B.: Managing gravel-roads on the basis of fundamental material properties (No. 15-2562) (2015)Google Scholar
  8. Henning, T., Giummarra, G.J., Roux, D.C.: The development of gravel deterioration models for adoption in a New Zealand gravel road management system (No. 332) (2008)Google Scholar
  9. Martin, T., Choummanivong, L.: The benefits of Long-Term Pavement Performance (LTPP) research to funders. Transp. Res. Procedia 14, 2477–2486 (2016)CrossRefGoogle Scholar
  10. Giummarra, G.: Unsealed Roads Manual: Guidelines to Good Practice, 2009th edn. Australian Road Research Board, Melbourne (2009)Google Scholar
  11. Road Infrastructure Management Support (RIMS): Unsealed Roads Tactical Asset Management Guide, RIMS, New Zealand (2015)Google Scholar
  12. Jones, D., Paige-Green, P., Sadzik, E.: Development of guidelines for unsealed road assessment. Transp. Res. Rec. J. Transp. Res. Board 1819, 287–296 (2003)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoAustralia

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