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Illinois Department of Transportation

Schedule

IDOT’S PROJECT DEVELOPMENT PROCESS

IDOT has a three-phase project development process, as shown on the timeline graphic below.

  • 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.

Funding for a portion of this improvement is included in IDOT’s Proposed Highway Improvement Program Fiscal Year (FY) 2023-2028.