Study of the I-69 extension between Evansville and Indianapolis began in 1944. The 1991 Intermodal Surface Transportation Act designated a new route from Indianapolis to Memphis,, via Evansville as a “high priority corridor” for development. As the project progressed, the Federal Highway Administration (FHWA) divided the project into two “tiers” for environmental analysis. After the plans were finalized, construction work on the six sections of Tier 2 began; 90 percent of the work on the extension is complete. The FHWA and Indiana Department of Transportation issued a Draft Environmental Impact Statement for Tier 2, Section 4, in 2010. A Final Environmental Impact Statement and a Record of Decision issued in 2011. The agencies selected the final route and construction plan for Section 4 after reviewing 48 options and produced a record reflecting consideration of impact on historic sites, geological formations, and air-quality, among other factors. Pursuant to its obligations under the Endangered Species Act, the U.S. Fish and Wildlife Service engaged in consultation and issued a Biological Opinion regarding the possible impact of tree-clearing on the endangered Indiana bat. Opponents filed suit. After a lengthy period of inactivity by Plaintiffs, including several missed case management deadlines, the district court granted summary judgment upholding the approvals. The Seventh Circuit affirmed.