June 25, 2018 11:43 Updated Follow Phase I (Tier One and Tier Two EISs) may take up to four years to complete and Phase II (Final Design and Construction Plans) typically takes approximately two years. However, at this time only Phase I is funded. Related articles Why is the Illiana needed? Is the project funded... how will it be funded? What is the Property Acquisition Process? How do I find information regarding highway road closings/construction? How does this benefit Indiana?