The Illinois Tollway started a comprehensive regional study for the Tri-County Access (TCA) Project in 2017, formerly proposed as the IL Route 53/120 project.

A TCA Project Executive Report (PDF) was put together in 2020 to serve as documentation and summation of the planning studies completed prior to the suspension of the TCA Project Environmental Impact Statement in July of 2019. (Note that the Executive Report is a large file that may take a few minutes to load.)