equally problematic. They rut, pothole and erupt in frost boils during freeze-thaw cycles, and grading is required on a constant basis. A 1997 statewide survey determined that a typical aggregate surfaced road in Minnesota is graded every 8.6 days. Constant grading accelerates gravel loss, a problem which is not only costly but also indicative of a road surface which is eroding and contributing to the sedimentation of nearby streams, ri

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