Interstate 69 in Indiana
The original plan (in a DEIS prepared by INDOT in 2004, but later dropped) was for I-69 to leave the now-former I-164 alignment somewhere just east of Green River Road (exit 3) and head south (instead of turning west with I-164) for approximately before crossing the Ohio at a point near the mouth of the Green River. This portion of the route had not then been funded, as construction of the new Ohio River crossing and its approaches in both states was expected to cost approximately $800 million. Indiana and Kentucky officials had said construction on the new Ohio River Bridge would not begin until at least 2020, after two new crossings near Louisville were completed. With Indiana then preparing to break ground on SIU 3, Kentucky officials indicated that collecting tolls might be the only feasible option for completing the I-69 bridge, as traditional federal and state funding for such projects were drying up. , neither Kentucky nor Indiana officials had yet come up with the money to plan and construct this I-69 bridge.
Interstate 696
In the late 1970s, during the second phase of construction, lobbying efforts and lawsuits attempted to block construction of the central section. If successful, the efforts would have left the freeway with a gap in the middle between the first (western) and second (eastern) phases of construction. During this time, MDOT assigned M-6 to the eastern section of the freeway under construction. Signs were erected along the service roads that followed 11 Mile Road to connect the already built stack interchange at I-75 east to I-94. By the time the eastern freeway segment was initially opened in January 1979 between I-94 and I-75, the signage for M-6 was removed and replaced with I-696 signage; it cost $200 million (equivalent to $ in ) to complete. Later in 1979, a closure was scheduled to allow work to be completed on three of the nine interchanges on the segment.