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Study finds no monetary return on paving Crow Wing County’s gravel roads; commissioners discuss dust control
Summary
An engineering study of 42 miles of county gravel roads found none of the 15 segments reached a benefit‑cost ratio above 1.0; staff recommended prioritization be considered in the long‑range transportation plan and discussed a proposed dust‑control contract paid in some districts by local option sales tax.
Jordan Larson, a county staffer, presented the county’s unpaved roads study on Nov. 18, describing field tests, geotechnical work and a benefit‑cost analysis to evaluate whether paving segments of the county’s 42 miles of gravel roads would be financially viable.
Larson said the county engaged SEH (Short Elliott Hendrickson) to perform field condition assessments, falling weight deflectometer testing and 32 soil borings across 15 road segments. The consultant used traffic history and a conservative 4% growth factor in forecasts to estimate future use and included…
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