Indiana average interstate construction cost rose to $46M per centerline mile in FY2026, report says

The Indiana Capital Chronicle reported that Indiana’s average cost to build a centerline mile of interstate reached $46 million in the 2026 state fiscal year. The figure includes full reconstruction and added travel-lane work such as the Revive I-70 project in Wayne County and the Safer Drive 65 project in Scott and Clark counties, the article said.

State and industry sources in the story attributed higher costs to inflation, pandemic-era supply disruptions, tariffs and rising demand for materials such as steel, concrete and asphalt. The report also lists project complexity—lane replacements and additions, widened shoulders, barrier walls, traffic and drainage control and complex maintenance-of-traffic setups on I‑70 and I‑65—as drivers. The article notes INDOT’s use of 20-year asset-management plans, project bundling, competitive bidding and alternative delivery methods.

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