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Conceptual Studies and Preliminary Design

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PDDM Chapter 4

  • Section 4.1 - General
  • Section 4.2 - Guidance and References
    • 4.2.1 - Standards of Practice
    • 4.2.2 - Guidance
  • Section 4.3 - Problem Definition
    • 4.3.1 - Identify Purpose and Need
    • 4.3.2 - Gathering Existing Information
    • 4.3.3 - Site Inspection
  • Section 4.4 - Design Standards
    • 4.4.1 - Applicable Design Standards
    • 4.4.2 - Resurfacing, Restoration and Rehabilitation (RRR) Projects
    • 4.4.3 - Geometric Design Criteria
    • 4.4.4 - Design Controls
    • 4.4.5 - Flexibility in Highway Design
    • 4.4.6 - Risk Assessment
  • Section 4.5 - Preliminary Engineering Investigation
    • 4.5.1 - Project Scoping Study
    • 4.5.2 - Project Scoping Report
    • 4.5.3 - Corridor Study
  • Section 4.6 - Developing the Evaluation Framework
    • 4.6.1 - Context Sensitive Solutions Approach
    • 4.6.2 - Interagency Scoping and Stakeholder/Public Involvement
    • 4.6.3 - Developing a Proposed Course of Action
    • 4.6.4 - Project Agreement
  • Section 4.7 - Alternatives Development and Evaluation
    • 4.7.1 - Types of Alternatives
    • 4.7.2 - Development of Preliminary Engineering Concepts
    • 4.7.3 - Description of the Alternatives
    • 4.7.4 - Alternative Benefits and Consequences
    • 4.7.5 - Alternative Evaluation and Recommendations
  • Section 4.8 - Design Features of the Proposed Improvements
    • 4.8.1 - Geometric Design Elements
    • 4.8.2 - Intersections
    • 4.8.3 - Railroad-Highway Crossings
    • 4.8.4 - Geotechnical
    • 4.8.5 - Hydrology and HyDraulics
    • 4.8.6 - Structures
    • 4.8.7 - Pavements
    • 4.8.8 - Right-of-Way
    • 4.8.9 - Access Management
    • 4.8.10 - Utilities
    • 4.8.11 - Permits
    • 4.8.12 - Environmental Features and Concerns
    • 4.8.13 - Construction Considerations
    • 4.8.14 - Design Exceptions
    • 4.8.15 - Cost Estimates
  • Section 4.9 - Implementation
    • 4.9.1 - Preliminary Design Review
    • 4.9.2 - Program Requirements
    • 4.9.3 - Stage Construction
  • Section 4.10 - Documentation
    • 4.10.1 - Preliminary Engineering Study Report
    • 4.10.2 - Environmental Document
    • 4.10.3 - Development Required for Final Plans, Specifications, and Estimate (PS&E)