01476448

Component

Climate change is challenging human society with frequent and serious impacts. Transportation infrastructures in the coastal area are especially vulnerable to flood impacts from storm surge, sea level rise, intense precipitation, and so on. Transportation infrastructure maintenance and retrofit plan should give priority to critical infrastructures whose failure will have important impacts on the network performance. In order to better inform decision makers of the criticality of transportation infrastructures in case of flooding, this study explores an accessibility-based criticality prioritization methodology to identify and rank critical transportation infrastructures under flooding risks. In particular, the methodology evaluates the network-wide impacts of infrastructure failure based on the increase in travel cost taking traffic congestion, trip cancellation, and location importance into account. The methodology is applied to the road network of Hillsborough County, Florida. Light detection and ranging elevation data, transportation infrastructure and network, and zone-based population data of the County are processed for the analysis. The approach yields results of not only the criticality prioritization of transportation infrastructures at flooding risks but also the most vulnerable regions as a result of infrastructure inundation. The authors show that some infrastructures are critical to its surrounding areas, while some become important to a much broader region. The results further demonstrate that an infrastructure is more critical if it serves more people in the study area.

This paper was sponsored by TRB committee ABE40(6) ABE40 Paper Review Subcommittee.

01470560

13-3199

English

15p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; References; Tables

Climate change; Coasts; Floods; Hazard mitigation; Infrastructure; Risk assessment

Hillsborough County (Florida)

Environment; Highways; Security and Emergencies; I15: Environment; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2013 Paper #13-3199

TRIS, TRB, ATRI

Feb 5 2013 12:39PM