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Board advances two bridge replacements into FY26, citing deteriorated substructure on 17th Street span

Jackson County Board of Supervisors · October 28, 2025

Summary

County engineer reported a deteriorated substructure on a 17th Street bridge and recommended advancing that project and a second bridge to FY26 letting; the board approved resolution 1151 to move the 17th Street and 458th Avenue bridges into the current FY26 construction program.

Jackson County's engineer told the Board of Supervisors that two bridge projects need to be advanced into the current FY26 letting schedule after recent inspections showed significant substructure deterioration on a 17th Street span. The engineer said the substructure rating was among the worst in the county and that replacing the bridge was preferable to temporary repairs. "I think it makes sense to replace it," the engineer said when describing the condition of the 17th Street bridge.

Because the cost estimates put the projects over the public-bid threshold, the engineer recommended public letting to comply with Iowa code. The board approved resolution 1151 to amend the secondary road construction program and advance the 17th Street and 458th Avenue bridges into FY26 so they can be let this winter and constructed next summer. The board discussed bid-threshold changes (the DOT threshold in the record was stated at about $115,000) and the practical implications of moving projects earlier in the five-year plan.

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