An Indiana Department of Transportation study says the state could see between $39 billion and $53 billion in toll revenue from 2021 to 2050.
The feasibility study on a proposed statewide tolling program estimates the money would be generated from tolls on six major highways–interstates 64, 65, 69, 70, 74 and 94, The Journal Gazette reported.
Potential toll rates ranged from 4 cents per mile for automobiles to 19 cents per mile for heavy trucks.
The revenue estimates don't take into account the cost of installing and maintaining equipment.
A law passed this year requires the highway department to perform feasibility studies and seek approval from the Federal Highway Administration for charging tolls on the interstate routes.
A tolling program would have to be approved by the governor and the federal government.