Ardurra conducted a comprehensive study along 40 miles of State Road 40 from one mile west of State Road 326 in Marion County to US 17 in Volusia County. This project will result in the widening of approximately 13 miles of SR 40 from two to four lanes in the western portion of the study area from Silver Springs to Levy Hammock Road—a portion of which will traverse through the Ocala National Forest.  

In 1988, three previous PD&E studies were initiated for the project; however, because of the project's controversial nature due to potential impacts to the Ocala National Forest, none of the three past PD&E study attempts were successfully completed.  

Ardurra formulated and facilitated the SR 40 Wildlife Crossing Committee to build consensus among the stakeholders, which included representatives from FDOT, U.S. Forest Service, U.S. Fish and Wildlife Service, the Florida Fish and Wildlife Conservation Commission, The Nature Conservancy, and Audubon of Florida. Using collaborative techniques, Ardurra (formerly Inwood) facilitated the committee meetings over a two-year period, whereby a consensus was reached for agreement on a wildlife crossing plan for the project. As a result of the stakeholder consensus associated with this agreement, the Environmental Assessment for the project was approved.  As the project moved into the design and permitting phase, Ardurra staff worked hand in hand with the US Army Corps of Engineers to receive federal wetland mitigation credit for the inclusion of the wildlife crossings at critical locations.  This resulted in the first project of its kind in Florida and only the second in the country.  Following the completion of the permitting process, Ardurra partnered with FDOT to publish a paper outlining the methodology developed using the Uniform Mitigation Assessment Method (UMAM) to recognize the functional benefits of the proposed wildlife under-crossings.