The plan was for the federal government to provide 90% of funds for the project with the state providing the difference. I-470 was added to the Federal Highway Act of 1968 and was to be part of the Interstate Highway and Defense System.
The plan involved a partnership between the federal government and the state for funding I-470, with the federal government providing 90% of the funds.  I-470 was added to the Federal Highway Act of 1968 as part of the Interstate Highway and Defense System.