Indiana average interstate construction cost hit $46M per centerline mile in FY2026, up nearly 450% since 2015
Indiana Capital Chronicle reports the Indiana Department of Transportation recorded an average cost of $46 million to build a centerline mile of interstate in the 2026 state fiscal year, a near 450% increase from the $8.4 million average in fiscal 2015.
Indiana Capital Chronicle reports Indiana spent an average of $46 million to construct a centerline mile of interstate highway in the 2026 state fiscal year, up nearly 450% from the $8.4 million average recorded in the 2015 fiscal year.
The story attributes higher costs to inflation-driven material-price increases, supply-chain shortages and pandemic effects and quotes INDOT and industry officials saying Indiana’s emphasis on adding capacity (not just maintenance), complex traffic-management on projects and competition from data centers for concrete, steel and equipment have contributed; INDOT’s FY2026 average included the Revive I-70 project in Wayne County and Safer Drive 65 in Scott and Clark counties.
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