Chanhassen Explains Mill and Overlay Road Technique
The City of Chanhassen released an educational video explaining its mill and overlay road construction technique as part of its ongoing pavement management plan.
The city manages approximately 119 miles of streets, reviewing and grading sections every three years to prioritize repairs based on available funding. Mill and overlay is used for roads scoring between 60 and 80 on the city's 100-point Overall Condition Index, which rates road health.
The technique involves grinding off the top layer of a road surface and installing new pavement. According to the city, this structural improvement extends a road's life cycle by approximately 15 to 20 years while saving costs compared to more extensive reconstruction.
The city uses mill and overlay when roads show signs of deterioration such as cracking, but the underlying aggregate base and sub-layer remain in good condition. The lower the road's condition score, the deeper the city must mill and remove from the surface.
Residents can find more information about current projects at chanhassenm.gov/projects. The educational video is part of a series explaining the city's pavement management plan and various construction techniques.
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Pavement Management Plan and Mill and Overlay Technique in Chanhassen
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