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County reports pilot fiberglass culvert lining on Donald Street, three culverts cost about $82,000
Summary
County engineers described using a UV-cured fiberglass liner to repair three culverts (two on Donald Street, one on Raymond Road), keeping roads open and avoiding full excavation; total cost reported about $82,000 for the three liners.
Black Hawk County engineers updated the Board of Supervisors on April 29 about a pilot program to line deteriorating concrete culverts using a fiberglass liner cured with a UV light train, a process intended to seal joints and avoid costly excavation and traffic closures.
Assistant county engineer Ryan Brennan described the technique: crews pulled a flexible fiberglass liner impregnated with epoxy through existing pipes, inflated it using…
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