7.3 Detailed Design

Detailed design includes the design and preparation of the final PS&E for construction letting. Generally, detailed design does not begin prior to the review and approval of the geometric schematic for new location or added capacity projects. However, at the Districts’ discretion, detailed design may be performed concurrently with the geometric schematic design to advance a project’s letting or meet other requirements.
Obtain approval from the District TP&D prior to commencing concurrent schematic and detailed design tasks.
Detailed design includes the final design of the following project elements:
  • Traffic Control Plan;
  • Roadway Design;
  • Retaining/Sound Walls and Miscellaneous Structures;
  • Drainage Design;
  • Utility Design;
  • Bridge Design;
  • Operational Design;
  • Railroad Design;
  • Environmental Design; and
  • Miscellaneous Design.