GEOMETRIC APPROVAL DRAWING

GAD

A GAD is a set of plans with sufficient detail to show the roadway features in a particular build
alternative. The intent of the GAD is NOT to prevent modifications during the Plans, Specifications, &
Estimate (PS&E) phase, but is used as the foundation for development of final design plans. The

Purpose of a GAD is to:
1. Establish the project base map
2. Establish horizontal/vertical alignments
3. Allow Traffic Operations to confirm that the proposed geometrics will meet operational needs
4. Identify major design elements (e.g. pavement, walls, bridge limits, sidewalk, driveways, gore
treatment, etc.)
5. Ensure proper application of design standards
6. Minimize design risks during PS&E phase.

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This definition is based on Caltrans definition of the document.

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