5. Crossing Surface

5.1  Crossing surface of a grade crossing, and a crossing surface of a sidewalk, path or trail must be as shown in Figure 5-1 and in accordance with Grade Crossing Surface - Cross Section, and must be smooth and continuous.

Figure 5-1 – Grade Crossing Surface Dimensions 

(a) Road, including a path or trail

(b) Sidewalk, path, or trail along a road

Grade Crossing Surface – Cross Section

The following list outlines the maximum and minimum width and depth of the flangeway gap and the field side gap and the elevation of top of rail with respect to the crossing surface.
  1. Flangeway:
    Width
    • Minimum: 65 mm
    • Maximum for:
      • Public sidewalks, paths or trails designated by the road authority for use by persons using assistive devices: 75 mm
      • All other grade crossings: 120 mm
    Depth:
    • Minimum: 50 mm
    • Maximum for:
      • Public sidewalks, paths and trails designated by the road authority for use by persons using assistive devices: 75 mm
      • All other grade crossings: No limit
  2. Field side gap
    A space is permitted on the outer side of the rail at rural locations, except for public sidewalks, paths or trails designated by the road authority for use by persons using assistive devices.
    • Maximum width: 120 mm
    • Maximum depth: No limit
  3. Elevation of the top of the rail with respect to the crossing surface
    The top of the crossing surface must be installed as close as possible to the top of the rail within the wear limits below:
    Wear limits:
    Public sidewalk, path or trail designated by the road authority for use by persons using assistive devices
    • Maximum distance of the top of the rail above crossing surface: 13 mm
    • Maximum distance of the top of the rail below crossing surface: 7 mm

All other public grade crossings; the maximum distance of the top of the rail above or below the crossing surface: 25 mm

Private grade crossings; the maximum distance of the top of the rail above or below the crossing surface: 50 mm

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