01690699

Component

https://doi.org/10.1177/0361198118821679

Hazards to roadways and travelers can be drastically different because hazards are largely dependent on the regional environment and climate. This paper describes the development of a qualitative method for assessing infrastructure importance and hazard exposure for rural highway segments in Hawai‘i under different conditions. Multiple indicators of roadway importance are considered, including traffic volume, population served, accessibility, connectivity, reliability, land use, and roadway connection to critical infrastructures, such as hospitals and police stations. The method of evaluating roadway hazards and importance can be tailored to fit different regional hazard scenarios. It assimilates data from diverse sources to estimate risks of disruption. A case study for Highway HI83 in Hawai‘i, which is exposed to multiple hazards, is conducted. Weakening of the road by coastal erosion, inundation from sea level rise, and rockfall hazards require adaptation solutions. By analyzing the risk of disruption to highway segments, adaptation approaches can be prioritized. Using readily available geographic information system data sets for the exposure and impacts of potential hazards, this method could be adapted not only for emergency management but also for planning, design, and engineering of resilient highways.

19-01781

English

2019

Transportation Research Record: Journal of the Transportation Research Board

Print

Figures (3) ; Maps; References (33) ; Tables (2)

Accessibility; Deterioration by environmental action; Environmental risk assessment; Hazard evaluation; Infrastructure; Land use; Planning; Risk assessment; Rural highways; Traffic volume

Hawaii

Environment; Highways; Planning and Forecasting; Security and Emergencies

TRIS, TRB, ATRI

Jan 3 2019 11:47AM