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International Roughness Index and Rut Data

Annual IRI data is available to download.

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2018 International Roughness Index and Rut Data

2016 - 2017 International Roughness Index and Rut Data

2011 - 2015 International Roughness Index and Rut Data

2010 International Roughness Index and Rut Data

2009 International Roughness Index and Rut Data

2008 International Roughness Index and Rut Data

2007 International Roughness Index and Rut Data

2006 International Roughness Index and Rut Data

2005 International Roughness Index and Rut Data

2004 International Roughness Index and Rut Data

2003 International Roughness Index and Rut Data