The reason the 2008 legislation (HR 1195) immediately applied the I-69 designation to the Purchase Parkway was to tap into federal Interstate Highway money to fund upgrades to the parkway. This is because Interstate Highway funds typically could not be used to upgrade an existing freeway until it is designated and signed as an Interstate. Median improvements near Mayfield, increased bridge heights to , shoulder improvements, and interchange reconstructions will all need to take place to bring the alignment into federal compliance. No official funding has been set in the six-year plan stipulating modernization of the parkways that will be affected by I-69's routing, nor has any official study been completed.