Illinois Department of Transportation projects are typically implemented in three phases.

Phase I encompasses the engineering and environmental studies for the proposed improvement. This phase analyzes existing and future conditions which define improvement needs called the Purpose and Need, develops and evaluates improvement alternatives, and concludes with the selection of a preferred alternative. The phase includes several different opportunities for those interested to express views, gather study information, and ask questions regarding the study process and improvements.

Phase II is the design and land acquisition stage. Construction plans for the preferred alternative are developed and necessary right of way is acquired is necessary.  

Phase III is the most visible phase to the public and involves the actual construction of the improvements. 
PHASE I STUDY PROCESS*
  • Identify and Document Existing Conditions and Deficiencies 
  • Develop Study Problem (WE ARE HERE)
  • Develop Purpose and Need (WE ARE HERE)
  • Develop Study Alternatives  
  • Identify and Evaluate Impacts of Developed Alternatives
  • Recommend Preferred Alternative​
*Public and agency coordination will be
​ongoing throughout the duration of the study
NEXT STEPS 
  • Analyze Existing Conditions and Deficiencies
  • Gather and Consider Public Input
  • Develop Study Problem 
  • Develop Purpose and Need
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​OTHER ADJACENT US 20 PROJECTS & STUDIES
​For more information regarding other projects and studies along the US 20 corridor, please visit the links below.
CURRENT PROJECTS & STUDIES: