Division of Transportation - Joseph R. Korpalski, Director of Transportation
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McHenry County Five Year Transportation Program
Illinois Department of Transportation
Illinois Tollway

Planned ConstructionProject phase

Project Engineering Phases

Transportation Projects typically originate from an adopted Long Range Transportation Plan and are carried into the County’s 5-Year Transportation Program.  
Preliminary Engineering/Phase I  

An engineering report involving a project’s geometric design, right-of-way requirements, alternatives analysis, and environmental studies. 

Design Engineering/Phase II
Translates the Phase I engineering report into contract plans, specifications and cost estimates for land acquisition and construction as well as the execution of local-state joint project agreements. 

Construction/Phase III
The project enters the construction phase, which includes associated construction engineering activities such as surveys, staking, inspections, materials testing, checking shop drawings, supervision of contractors, field adjustments and plan revisions, record keeping, and documentation, and payments to contractors.