INDOT reports higher interstate construction costs from FY2015 to FY2026; inflation and project mix cited

Indiana Capital Chronicle reported Oct. 2, 2026 that Indiana Department of Transportation data show average cost to build a centerline mile of interstate increased from fiscal 2015 to fiscal 2026. INDOT and its spokespeople told the paper the change reflects higher inflation, a shift toward more complex interstate and bridge projects since the 2017 road‑funding law, and competition for materials and equipment.

The article quotes INDOT officials saying the FY2026 average includes some complicated, material‑intensive projects and that the agency uses 20‑year asset‑management plans, competitive bidding and alternative delivery methods to manage costs. No later decision date or new contract award was provided in the story.

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