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I-5 Grinding Feb 24 101

A view of the front end of the pavement grinding machine on southbound I-5 in downtown Seattle on Feb. 24, 2009. The grinding process removes about a half inch off of the pavement surface to provide a smoother ride with enhanced friction. The grinding machine features diamond-tipped circular blades that are stacked together on a roller that cuts a four-foot wide section of pavement. For more project information, visit Learn about WSDOT's busy 2009 construction season at


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Taken on February 24, 2009