Skip to main content

Welcome to IDOT's new website design! The address for some web pages has changed, so be sure to update any saved favorites as needed. The search index has not been updated yet for the new website design so the search function is not fully operable yet but will be coming soon!

Illinois Department of Transportation

Schedule

IDOT develops and implements projects using the following three-phase process:

  • Phase I (or the project study) consists of developing the project scope, environmental studies, public involvement and preliminary design of the project.
  • Phase II (design) consists of refining the design to develop contract plans and conduct land acquisition.
  • Phase III (construction) consists of the actual construction of the project.

This schedule is tentative and subject to change.