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Illinois Department of Transportation

Featured Projects

Check out impactful projects that showcase IDOT’s contributions to improving transportation in Illinois. From major road improvements to innovative transportation programs, learn about the projects making a difference in communities across the state.

IDOT utilizes a three-phase process for advancing projects. 

  • Phase I occurs as engineering identifies the project purpose and need, completes environmental reviews and conducts preliminary design for the project.
  • Phase II is the design phase which refines the design and develops plans, specifications and estimates for construction. Any land acquisition needed for a project takes place during Phase II.
  • Phase III is the construction, and final phase of a project.

Below are some of these projects, with up-to-date information including an overview, benefits, project scope and public involvement, as well as timely news, current status and updates.