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 for bridge construction. The drawing provides specifications for four different material types used in bridge embankment construction: slope protection, embankment material (granular, rock or soil), granular/cohesive pile core, and structure granular backfill. The document 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 requires either granular or rock embankment with cohesive pile core for drilled shafts and pre-drilled piles. The document references current standard drawing RGX-105 for defining material limits and notes that while an end-bent at zero degree skew is shown, the same principles apply to varied structures. Additional construction details are referenced in standard drawing RDP-010.