Implementing the International Roughness Index for Concrete Pavement Evaluation

Status:  Complete
Report Date:  05/25/2007


Mn/DOT was trying to improve its method for awarding bonuses to contractors for especially smooth concrete pavement. Investigators compared the old method for measuring smoothness to the new International Roughness Index standard, looking at how each pavement analysis method depicts various surface imperfections and evaluating the different options for implementing IRI incentives.

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