Abstract
Civil infrastructure is vulnerable to climate-based event impacts that are increasing. A comparative with-and-without simulation-based GHG emissions change estimation methodology is proposed for estimating the changes in roadway transportation-related GHG emissions, a key contributor to climate change, from repairs required to mitigate damage and the execution of adaptations taken to prevent future damage. Riverine flooding from precipitation, coastal flooding from surge and high tide, and pavement deterioration from high temperatures and dry conditions are considered. A GHG emissions-based link criticality index is developed for identifying links for proactive adaptations. The tool provides insights for climate impact reduction policy creation and evaluation, and can aid in assessing the effectiveness of roadway infrastructure investment plans for combatting climate change effects. The methodology is illustrated on a case study in Northern Virginia. The results uncover how climate change events and actions taken can exacerbate conditions that accelerate climate change in the long term.
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