Hazard and risk assessment for early phase road planning in Norway

Anders Solheim (), Kjetil Sverdrup-Thygeson and Bjørn Kalsnes
Additional contact information
Anders Solheim: Norwegian Geotechnical Institute
Kjetil Sverdrup-Thygeson: Norwegian Geotechnical Institute
Bjørn Kalsnes: Norwegian Geotechnical Institute

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2023, vol. 119, issue 2, No 8, 943-963

Abstract: Abstract Road construction in rugged terrain and variable, partly harsh climate is challenging. Proper assessment of natural hazards at an early planning stage can give large cost savings and safer roads. In assessing natural hazards along 720 km of planned roads in Norway, a GIS-based tool was developed to utilize publicly available data and dynamic runout models. The output is an outline of the most critical locations and serves to limit the extent of necessary field work. The Norwegian national susceptibility maps are generally conservative and using only these in the planning would give unrealistically high hazard levels. Various optimizing techniques were therefore implemented in the GIS tool and the outputs further calibrated against existing detailed hazard maps in selected locations and further validated during field work at the defined 'hotspots'. The field work comprised assessing return periods of unwanted events, probable road closure time, and relevant mitigation measures, all within sets of pre-defined ranges of values. The following consequence evaluation quantified the indirect economic consequences of closed road and assessed the consequence for emergency preparedness qualitatively. Other consequences were not considered in the study. Climate change was considered and evaluated to affect the probability for flooding and debris flows, whereas the link between climate change and the other assessed hazards was considered too uncertain to impact on the risk estimates. Results of the study were communicated through an interactive map solution, with key results presented as fact sheets activated in the map for each risk section of the roads.

Keywords: Natural hazards; Risk; Roads; Norway; Climate (search for similar items in EconPapers)
Date: 2023
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1007/s11069-022-05729-6 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:nathaz:v:119:y:2023:i:2:d:10.1007_s11069-022-05729-6

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/11069

DOI: 10.1007/s11069-022-05729-6

Access Statistics for this article

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards is currently edited by Thomas Glade, Tad S. Murty and Vladimír Schenk

More articles in Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards from Springer, International Society for the Prevention and Mitigation of Natural Hazards
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().