WFLHD Highway Design Process
The Highway Design Process consists of the following major phases:
- Preliminary – Preliminary Design (30%)
- Intermediate – Intermediate Design (50%)
- Plan-in-Hand – Plan-in-Hand Design (70%)
- Final – Final Design (95%)
- PS&E Delivery – PS&E Delivery (100%)
- Ad/Award – Advertise and Award Phase
The above pages describe the steps involved with the Highway Design activities. Select a phase above (or listed in the left-side menu) to see the activities associated with that phase. Additional information is available for some of the activities as described below.
Directions associated with a particular activity. Sources include the GEOPAK Guide, ADHOC Help, and PDDM supplements.
Links to items used to complete the activity. Examples include forms and pre-configured spreadsheets such as the Notice to Proceed calculator and gradient check worksheet.
Manuals that provide background design data and knowledge used to perform highway design. Examples include the AASHTO Green Book, PDDM, MUTCD, and the Park Road Design guide.
The older PD Process Flowchart provides a graphical model of the process showing the interaction with the Environment and R/W process. While not completely current, the chart does provide a good overall view.