VTrans Improves Transportation Resilience Planning
In December 2015, VTrans launched a project that integrates river science with transportation planning, engineering and decision making to improve the resilience of the transportation network to damage and disruptions caused by flooding.
The project employs a risk management approach, which combines the probability of an event occurring with the consequences. A high risk location is a road segment, bridge or culvert that is likely to be damaged by a flood (the event), and the resulting disruption to the transportation system will have a significant, negative impact on travel, emergency access and the economy (the consequence). A resilient transportation system will continue to function, or could be restored quickly, when stressed by a flood.
The project will provide tools to help planners and engineers identify high risk locations and to develop alternative solutions from a watershed and transportation network perspective. For example, options to improve the flood resilience of a road segment with an undersized bridge could include a new bridge with a longer span, improving a local road to provide an alternate route if the bridge is damaged, modifications to the river channel, or reestablishing the river's connection to a floodplain and conserving the underlying land.
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