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Miami County reviews 5-year road maintenance program and budget trade-offs
Summary
Road and Bridge staff presented a maintenance schedule through 2030 and life-cycle cost options, asking commissioners whether to target a 15–25 year mill-and-overlay cycle and how much to budget for routine maintenance.
Miami County commissioners and Road & Bridge staff reviewed a five-year schedule of planned mill-and-overlay projects and countywide maintenance needs at a budget workshop, focusing on how many miles to resurface each year and how to fund that work.
The presentation laid out projected mill-and-overlay requirements and costs under multiple life‑cycle targets, and staff asked commissioners whether to plan for a shorter (more expensive) cycle that preserves pavement condition or a longer (cheaper up front) cycle that raises in‑house maintenance costs. “Mill and overlay, 300,000 per mile. 15 year life cycle, that price currently is $6,700,000,” Road & Bridge staff member Eric said during the recorded discussion.
The question matters because Miami County currently records roughly 335 miles of hard‑surface roads. Eric told commissioners that to preserve a 15‑year wearing surface life, the county would need to mill and overlay about 22.3 miles per year at an estimated $6.7 million annually. Staff presented alternative targets: 18 years (18.6 miles, ~$5.58 million), 20 years (16.75 miles, ~$5.03 million), 22 years (15.2 miles, ~$4.5 million) and 25 years (13.4 miles, ~$4.02 million) based on a per‑mile cost assumption (presentation used $300,000/mile as a baseline figure and noted variations in actual bids).
Staff also noted that the county’s in‑house maintenance (crack sealing and chip sealing) is currently budgeted at roughly $500,000 per year and that postponing mill‑and‑overlay work will increase those in‑house maintenance costs and the risk of base failures that require expensive rebuilds rather than routine mill/overlay work. Commissioners and staff discussed recent production: the county completed a little over 13 miles of mill/overlay last year, which staff said corresponds roughly to a 25‑year life cycle if maintained at that pace.
Commissioners weighed incremental increases in annual resurfacing instead of an immediate large jump. One commissioner said they would be “willing to look at that 15 or so to get us in and see what that does to a budget,” and another suggested aiming for roughly a 22‑year cycle as a compromise and revisiting it later. Staff pointed out that the county’s current asphalt appropriation in the operating budget is about $3.6 million and that supplemental revenues such as the county’s quarter‑cent sales tax have been combined with the asphalt line in some years to increase mileage achieved.
Staff said specific 2025 projects include base restorations and overlay work on 220 Third (from Woodland Road to Metcalfe and Metcalfe south) and other routes; the 2025 program (about 14.5 miles) has been bid and opened and will be brought back to the commission for contract action next week. Staff emphasized that the multi‑year schedule is flexible: projects may be added, removed, or reprioritized based on bids, conditions and funding.
The presentation closed with staff asking the commission for direction on a planning target (miles/year and life‑cycle) to use for the upcoming budget; commissioners indicated preference for a modest increase in annual miles and for staff to return with budget materials and printable maps.
Miami County Road & Bridge staff will provide bid details and printable project maps to the commission ahead of the formal budget hearings.
