INDIANAPOLIS — The Indiana Department of Transportation (INDOT) told the State Budget Committee that the average cost to construct a centerline mile of interstate during the 2026 fiscal year was roughly $46 million. That figure reflects the state’s shift toward larger reconstruction and capacity‑expansion projects, not simple resurfacing jobs.
Why costs have risen
INDOT spokeswoman Natalie Garrett explained that the calculation includes far more than pavement. Modern projects often involve adding lanes, widening shoulders, installing barriers, managing traffic, improving drainage, and covering higher labor expenses. Inflation, supply‑chain disruptions and lingering effects of the COVID‑19 pandemic have also pushed material prices higher.
Federal data from the Federal Highway Administration’s National Highway Construction Cost Index shows a similar upward trend nationwide, especially since 2021. However, Indiana officials stress that inflation alone does not account for the state’s jump from an average of $8.4 million per mile in fiscal 2015 to today’s $46 million.
Complex projects drive the numbers
Brian Gould, executive director of the Build Indiana Council, noted that the state is now tackling projects that add interstate capacity and rebuild major highway sections. Two flagship efforts – the Revive I‑70 project in Wayne County and the Safer Drive 65 project spanning Scott and Clark counties – illustrate the added complexity. Both require keeping traffic moving through busy corridors while crews work, demanding temporary traffic patterns, concrete barriers and extensive lane‑management equipment.
Urban and heavily traveled areas also require more preliminary engineering, additional safety measures and greater logistical coordination. Large‑scale interstate and bridge work consumes substantial steel and concrete, commodities that have risen sharply in price. Gould pointed to Indiana’s booming data‑center industry as another source of competition for these essential materials.
Strategies to control costs
INDOT is employing several tactics to keep projects affordable. Major contracts are competitively bid, with the agency required to select the lowest‑priced qualifying proposal. The department is also expanding alternative project‑delivery methods that involve contractors early in the design phase, allowing risks to be identified sooner and potentially reducing change‑order costs.
Bundling projects by timing and location creates efficiencies and limits the number of separate construction disruptions motorists face. Additionally, Indiana is the only state with a 20‑year asset‑management plan covering pavement, bridges and drainage, a proactive approach that emphasizes preventative maintenance to avoid costly full‑scale reconstructions.
Long‑term outlook
INDOT projects a $60 billion investment in preservation and construction from 2017 through 2037. The portfolio includes Revive I‑70, the I‑65 Safety and Efficiency project, Safer Drive 65, Clear Path 465, the I‑69 Ohio River Crossing and other major initiatives aimed at improving safety, reducing congestion and supporting economic development across Indiana.
While the $46 million per‑mile average may appear high, it reflects both rising construction prices and Indiana’s deliberate choice to pursue larger, more complex transportation solutions that benefit families, businesses and communities throughout the state.
Original reporting: WOWO News/Talk (Fort Wayne) — read the source article.
