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 69 in Indiana
When the United States Congress enacted the "Intermodal Surface and Transportation Efficiency Act" in the mid-1990s, it established High Priority Corridors 18 and 20. Together these corridors mandate the construction of an Interstate highway from Port Huron, Michigan to Brownsville, Texas. The new highway was designated I-69. The routing of the highway has proven to be controversial in Indiana, as it was to become a planned toll road in southern Indiana called Southern Indiana Toll Road, or SITR. After nearly 10 years of studies and close coordination between the Federal Highway Administration (FHWA), Army Corps of Engineers (CoE), Environmental Protection Agency (EPA), and the Indiana Department of Transportation (INDOT), the final route for I-69 between Indianapolis and Evansville was announced in March 2004. At that time it was still uncertain when the extension would be built, since no funds were available to construct the $1.8 billion highway. Nonetheless, the FHWA and INDOT have been extremely methodical in the environmental studies required for the SITR to be built. State and federal highway officials opted to use a two-tier environmental study along with close coordination with the CoE, the EPA, and other state and federal agencies to ensure the proposed route can withstand any legal challenge that may be brought forth by opponents. While officials have performed studies on dozens of possible alignments over the past 30 years, the most recent round of environmental studies for the SITR have been ongoing since 1992.