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County engineer to seek bids for box culvert replacement on Level B Road; letting set for Feb. 28
Summary
Winnebago County authorized advertisement for bids and set a Feb. 28 letting date for a precast box culvert replacement (project LE25N173-95) on Level B Road in Buffalo Township.
Winnebago County authorized the county engineer to advertise for bids and set a Feb. 28 letting date for project LE25N173-95, a precast box culvert replacement on Level B Road in Buffalo Township.
The county engineer told the board the project will use a 14-by-12-foot precast box culvert matching a downstream crossing and that prequalified suppliers would be invited to bid. The county expects a small pool of bidders, historically two to four suppliers, and does not require a performance bond because the purchase is primarily precast materials rather than a complex construction contract.
The engineer said the county will publish notices on its website, in the Iowa Associated General Contractors listings and through Iowa DOT notices to meet public advertisement requirements. County staff said the box culvert must meet HL-93 live-load requirements and Iowa DOT specifications for precast box culverts.
Why it matters: Replacing the culvert is intended to address a structure with a low posting that was at risk of closure; the board approved advertising so bids can be opened and the board may act on award following bid review.
What was approved: The board approved a resolution (by voice vote) authorizing the letting date of Feb. 28 at 10 a.m. and directing the county engineer to solicit bids and approve plans and specifications for the project.
Project details and constraints: The culvert is sized 14 by 12 feet with approximately 3 feet of cover, designed to meet HL-93 loading (suitable for heavy trucks). The engineer noted DOT standard drawings and reinforcement schedules apply; because the county is purchasing precast materials, bonding and extensive performance guarantees were not required for this procurement arrangement.
Next steps: County staff will advertise the project, accept bids on the stated letting date and return a recommendation to the board for contract award and approvals.
Sources: County engineer's presentation and board motion recorded in the meeting transcript.
