Confirming PS&E Design Matches Exhibit A Design

On construction projects, the Exhibit A design is a 30% design
completed
 12 or more months in advance of the final PS&E. Most railroad companies will request a review and approval of the PS&E (often referred to as an Exhibit B on construction projects) to verify certain elements of the design have not changed. Key elements that should not differ between the Exhibit A and 100% PS&E include:
  • Horizontal and vertical clearances for overpasses.
  • Location of overpass bents and abutments.
  • Alignment of overpass or underpass.
  • Width of overpass.
  • Any drainage or hydraulic elements on railroad right of way.
  • Fence details on overpass.
  • Lighting details
    under overpass structures for the railroad
    .
  • Location and design of crash walls.
  • Locations of other features on railroad rights of way such as sidewalks, light poles, signing, retaining walls, guardrail, etc.
  • Stencil of DOT number and railroad milepost on overpass (BNSF only).
  • Haul road details.
  • Railroad company access road details.
  • Underpass material selection and design elements.
  • Protection for underpass bents (barrier or other).
  • Shoofly track design geometry and materials.
  • Any other track design geometry and standards.
  • Locations and types of railroad warning devices on at-grade crossings.
  • Roadway approach grades on at-grade crossings.
  • Roadway lane widths, shoulders, and medians on at-grade crossings.
  • Construction phasing on railroad right of way.