2025 Drawing - Trimming of Bridge Embankments.pdf

This is a Kentucky Department of Highways standard drawing (RGX-100-05) detailing the treatment of embankments at end-bents. The drawing provides specifications for four distinct material types used in bridge embankment construction: slope protection, embankment material (granular, rock, or soil), granular/cohesive pile core, and structure granular backfill. The drawing includes both a plan view and cross-sectional view (Section A-A) showing the placement and configuration of these materials, along with 4" perforated underdrain pipes and an 8" perforated underdrain pipe for headwall construction.

The drawing specifies that slope protection is required as noted on bridge plans, granular/rock embankment as noted on roadway plans, and structure granular backfill is required at all times. The pile core requirements vary based on embankment type, with specifications for both granular and cohesive pile cores when using drilled shafts and pre-drilled piles. The drawing references current standard drawing RGX-105 for defining material limits and notes that while a zero-degree skew is shown, the same principles apply to varied structures.