Indiana reports FY2026 interstate construction averaged $46M per centerline mile, up nearly 450% since FY2015
The Indiana Capital Chronicle reported that Indiana spent an average of $46 million to build a centerline mile of interstate in fiscal year 2026 (which ended in June 2026), compared with an $8.4 million average in FY2015; the figure was shown on a late‑August State Budget Committee slide.
The Indiana Capital Chronicle reported that Indiana’s average cost to construct a centerline mile of interstate was $46 million in the 2026 state fiscal year (which ended in June 2026). The article says that figure represents centerline miles built as part of full reconstruction or added travel‑lane projects and that the FY2026 average is up nearly 450% from the $8.4 million average in FY2015.
The report notes the FY2026 average includes lane replacements and additions, widened and rebuilt shoulders, barrier walls and guardrails, traffic and drainage control, materials, labor and other costs. It says INDOT bundles projects, that two complicated projects (Revive I‑70 in Wayne County and Safer Drive 65 in Scott and Clark counties) were included in the FY2026 average, and that a Federal Highway Administration index rose more than 60% from 2020 through 2025.
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