For ADOT’s design and construction document preparation, each project is developed through multiple design and review stages. These required steps encourages a systematic approach to develop comprehensive design and construction documents. These stages are broken out into: Stage I (15%) detailed in the Preparing Project Assessments Web page, Stage II (30%), Stage III (60%), Stage IV (95%) and Stage V (Final PS&E). Below is a summary of the stages and the key components of each stage.
More in depth guidance is available in the Documents Required for Design Phase Submittal, as shown in the Project Development Documents Web page, along with a summary checklist. Designers and other users should follow the policies, procedures, and guidelines; as well as other guidance and principles provided by AASHTO and other publications.
Stage I (Project Assessment)
Initial/Final Project Assessment
Initial Environmental Considerations
Initial Utility Report
Initial Cost Estimate
Stage II Design
Update Design and Cost Estimates
Preliminary Drainage
Preliminary Structures
Preliminary R/W
Preliminary Materials Memo (Geotech)
Preliminary Utility Conflicts
Initial Traffic Control
Environmental Clearance
Stage III Design
Update Stage II Design and Cost Estimates
Final Drainage
Preliminary Structures
Final R/W
Final Materials Memo (Geotech)
Final Utility Conflicts
Preliminary Traffic Control Plans
Preliminary Landscape/SWPPP
Incorporate Environmental Mitigation
Preliminary Special Provisions
Stage IV Design
Update Stage III Design and Cost Estimates
Final Plans, Details, Calculations
Final Special Provisions
Final Bidding Schedule
Final Construction Schedule
Draft Clearance Letters
Stage V Design
Seal Plans, Special Provisions, and Estimates
Final R/W Clearance Letter
Final Utility Clearance Letter
