Pottawattamie supervisors weigh cost split for 195th Street seal-coat petition

Pottawattamie County supervisors on June 2 discussed how to divide the cost of a petition-driven seal-coat project on 195th Street, with county staff estimating a roughly $630,000 job covering about 2.4 miles from Magnolia to Badger.

Andy Wix, the county engineer, told the board the petition covers about 13,000 feet and that petitioners would likely pay about $445,000 — roughly 70 percent of the estimated cost — with the county covering the remaining roughly $190,000. Wix said the board needs to decide how to apportion that petitioners’ share: split the cost evenly per parcel, make assessments proportional to assessed value, or adopt a weighted hybrid such as agricultural versus residential splits.

"It is 2.4 miles, 13,000 ft," Wix said while reviewing cost and parcel options. He outlined three approaches: an even per-parcel charge (which would make a half‑million‑dollar residence pay the same as a small agricultural parcel), a proportional charge based on assessed value, and a weighted split that might assign, for example, 70 percent of the petition share to residential parcels and 30 percent to agricultural parcels.

Supervisors expressed concerns about fairness and precedent. One supervisor noted that evenly splitting costs can place disproportionate burdens on owners of multiple farm parcels, while another argued proportional assessments can be unfair when properties that pay more in taxes receive the same use benefit as lower‑valued homes. "Valuations tend to go up once those roads are seal coated too," a supervisor said in support of proportional allocation.

The board and staff also discussed procedural and statutory constraints. A supervisor cited Iowa Code chapter 311 on secondary road assessment districts and called the statute "very vague," and Wix said petitioners had demonstrated majority interest but had not reached the board’s 75 percent threshold for certain policy actions. The group addressed technical questions — whether a creek crossing on the project would require bridge work or only a culvert — and Wix said a culvert is expected and will be analyzed to confirm no right‑sized replacement is necessary.

Staff told supervisors the county typically considers 10‑year amortization schedules for such projects and noted a customary interest rate range of 4 to 11 percent under state code; the county had previously used 6 percent in some cases but staff said prior petitions had applied a zero‑percent rate. Supervisors requested that staff provide parcel‑level maps showing which parcels are residential versus agricultural, assessed values, acreage and ballpark payment estimates under the different allocation methods so petitioners can see likely costs before the board takes further action.

No formal decision was made. Supervisors directed staff to refine the map and cost breakdown options and to return with more detailed information; board members said they could still hold a study session and that a final choice would follow a clearer presentation of how different methods would affect individual property owners.

Next steps: staff will prepare parcel‑level cost estimates and maps for board review. If petitioners reach the board’s required thresholds, the board will reconsider the financing approach with that information on the record.