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South Miami consultant recommends $500,000 a year to hold pavement condition steady; sidewalks need about $140,000 in repairs
Summary
Consultants told the City Commission the city’s pavement condition index averaged about 77 and that roughly $500,000 per year in maintenance spending is the breakeven to prevent network deterioration; sidewalks showed about 500 discrete repairs, estimated at roughly $140,000.
Kevin Stone of Kimberly Horn & Associates presented the City Commission with a pavement and sidewalk condition assessment on June 4, saying the city’s current average Pavement Condition Index (PCI) is about 77 and that “we found that that breakeven point is right around $500,000 per year.” The study examined 44 miles of the city’s street network and modeled scenarios ranging from a maintenance‑level budget to an aggressive one‑time backlog fix.
The report said much of South Miami’s network is in “good to satisfactory” condition, represented by green on the study maps, and that lower‑cost preventive treatments (crack seal, surface seals) can treat more miles per dollar than full‑depth reconstructions. The consultant illustrated that a $500,000 annual program would treat roughly seven miles in year one and hold the backlog roughly level; a hypothetical $1,000,000 program would raise average PCI into the low‑80s, while addressing the entire current backlog at once would cost “a little over $4,000,000,” Stone said.
Why it matters: pavement condition is a long‑lead maintenance problem—deferring work increases the share of high‑cost reconstruction projects. Stone and staff emphasized that preventive maintenance buys far more mileage per dollar and that failing to meet the breakeven budget will let the average PCI decline over time, creating a larger and more expensive backlog.
The assessment also covered sidewalks. Stone said crews performed on‑the‑ground inspections of sidewalk segments and identified “just under 500 repairs” of varying scope, from grinding trip hazards to full panel replacement. The consultant estimated the aggregate cost of those immediate sidewalk repairs at roughly $140,000, and told commissioners the figure was pulled from recent local contract prices and a Miami‑area piggyback price check.
Commissioner questions focused on prioritization and funding. Stone described a cost‑benefit ranking (CVV) that weights functional classification (collector, arterial, local) and traffic exposure (ADT) along with PCI thresholds; the city manager and staff noted that roughly half of the funding for pavement work would likely be split between the general fund and existing transportation tax/PTP revenues. Commissioners also asked about the data collection and software used; Stone described a two‑pronged approach—drive‑mounted profiling for millimeter‑accuracy plus boots‑on‑the‑ground validation for a sample of segments—and demonstrated a portaled scenario tool called Drive that allows staff to model the effect of different annual budgets.
No formal action to adopt a new funding level took place at the meeting. Staff and commissioners agreed to use the assessment to inform the capital improvement program and budget discussions; staff said the CIP and budget calendar would be updated to reflect the study findings.
