March 30, 2017 17:57 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? How do I find information regarding highway road closings/construction? What is the Property Acquisition Process? How does this benefit Indiana?