Best Practices for Road Weather Management Version 2.0
Title:
Decision Aid for Prioritizing Bridge Deck Anti-icing System Installations
Abstract:
During winter conditions, moisture on bridge decks often freezes before the surrounding roadway surface. Automatic anti-icing systems spray chemicals that prevent or minimize ice bonding to the bridge deck. The Nebraska Department of Roads (NDOR) is interested in installing such systems on various bridges statewide. However, limited funding requires that bridges be prioritized for installtion based on relevant criteria. The factors considered in the prioritization of installing automatic anti-icing systems include accident history, bridge alignment, weather, traffic, and bridge distance from maintenance yard, among others. Four different decision-aid methods; namely benefit-cost ratio, cost effectiveness, utility index, and composite programming; were considered. Given it's flexibility and advantages over other methods, composite programming appears to be the most suitable method for bridge prioritization.
Source(s):
82nd Transportation Research Board (TRB) Annual Meeting; University of Nebraska-Lincoln, Mid-America Transportation Center
Date: 2003
Author:
Pesti, Khattak, Kannan, McCoy
Keywords:
Anti-icing/deicing
Benefit/cost
Crashes
Decision support
Safety
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