Indiana interstate highway construction costs soar amid inflation, state’s own ambitions

Indiana is building additional interstate capacity where other states are focused on road maintenance or federal bridge funding.

By: Leslie Bonilla Muñiz

Outlets: Indiana Capital Chronicle

Published: October 2, 2026

Words: 870

Last Updated: 2 weeks, 2 days ago

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Skyrocketing highway construction costs in Indiana don’t just come down to inflation, state and industry leaders say.

Indiana spent an average of $46 million to construct a centerline mile of interstate highway in the 2026 state fiscal year, which ended in June. That’s up nearly 450% from the $8.4 million average recorded in the 2015 fiscal year, according to a slide shared in a late August meeting of the State Budget Committee meeting.

“That’s unbelievable,” …

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